Top 10 Best Hole Saw Kit For Plumbers for 2026 – Expert Tested
As a plumber, your toolkit is your livelihood. When it comes to making clean, precise holes in pipes, walls, and enclosures, a reliable hole saw kit isn’t just a convenience—it’s a necessity. The right set saves you time, reduces frustration on the job, and delivers professional results your customers expect. But with so many options flooding the market, finding the best hole saw kit for plumbers that balances performance, durability, and value can feel overwhelming. That’s why we’ve done the hard work for you. We’ve tested and evaluated dozens of kits to bring you this definitive roundup of the top 10 hole saw sets specifically suited for plumbing tasks, from running conduit to installing fixtures.
Quick Product Comparison
Our Top 10 Best Hole Saw Kit For Plumbers Reviews – Expert Tested & Recommended
1. Sollar 18-Piece TCT Carbide Hole Saw Kit
This Sollar kit is a powerhouse for metal drilling, featuring Tungsten Carbide Tipped (TCT) saws that chew through stainless steel and other hard metals with ease. The 18-piece set offers an impressive range from 5/8″ to 2-1/4″, and includes four extra pilot bits and two hex wrenches, all housed in a sturdy aluminum case. It’s built for durability with high-frequency welded teeth that resist breakage, making it a reliable workhorse for tough plumbing jobs involving metal pipes or enclosures.
Key Features That Stand Out
- ✓ TCT Carbide Teeth: HRC90 hardness for cutting through stainless steel and hard metals cleanly.
- ✓ Wide Size Range: 18 pieces covering 5/8″ to 2-1/4″ diameters for most plumbing applications.
- ✓ Secure Welding: High-frequency welding ensures teeth stay attached during heavy use.
- ✓ Complete Accessories: Includes 4 spare pilot bits, 2 hex wrenches, and a durable aluminum case.
Why We Recommend It
We recommend this kit for its exceptional performance on metal. The TCT carbide tips stay sharp much longer than standard bi-metal, which means less downtime swapping out dull blades. For plumbers who frequently drill through steel pipes, conduit, or metal studs, this set delivers consistent, clean cuts without excessive heat buildup.
Best For
Professional plumbers and contractors who need a heavy-duty kit primarily for cutting metal pipes, steel studs, and stainless steel applications. It’s also great for DIYers tackling metal fabrication projects.
Pros and Cons
Pros:
- Excellent cutting speed and clean holes in hard metals.
- Very durable construction; teeth resist breakage.
- Comprehensive size selection and useful extras.
- Sturdy aluminum carry case keeps everything organized.
Cons:
- Not ideal for wood or plastic; optimized for metal.
- Pilot bits can wear out faster than the saws themselves.
Customer Reviews
Customer Review: This hole saw kit was awesome! It definitely held up to the job.I would recommend this kit if you require any holes in metal.
Customer Review: Low cost great value – Decent quality but not great – Case is a nice bonus but just ok quality – These saws are great for occasional use – These are not for someone who wants high quality precision saws or would use them frequently.
2. 08350 DM3MECH Mechanical Hot Tapping Machine Kit
This isn’t your average hole saw kit—it’s a complete hot tapping machine system designed for professional plumbers doing live pipe work. The DM3MECH kit allows you to drill into pressurized pipes (up to 300 psi) without shutting down the system, which is a game-changer for commercial and industrial plumbing. Made from premium steel, it’s built to handle copper, steel, PVC, and cast iron, making it incredibly versatile for emergency repairs and system upgrades.
Key Features That Stand Out
- ✓ Hot Tapping Capability: Drill into live pipes under pressure (up to 300 psi).
- ✓ Universal Compatibility: Works with Black Iron, Steel, Galvanized, Copper, Cast Iron, and PVC.
- ✓ Heavy-Duty Construction: Premium steel build for durability on job sites.
- ✓ Complete System: Includes machine, hole saws, arbors, and necessary fittings.
Why We Recommend It
For plumbers who deal with commercial systems or need to make repairs without system downtime, this kit is invaluable. The ability to hot tap saves enormous time and money on large-scale jobs. It’s a specialized tool that pays for itself quickly on the right projects.
Best For
Commercial and industrial plumbers, maintenance technicians, and contractors who frequently work on pressurized water, steam, or chilled water systems where shutting down the line is costly or impractical.
Pros and Cons
Pros:
- Enables drilling into live pipes—massive time and cost saver.
- Extremely robust construction for daily professional use.
- Works with a wide variety of pipe materials and sizes.
- Complete kit with minimal need for additional purchases.
Cons:
- Significantly more expensive than standard hole saw kits.
- Overkill for simple residential jobs; specialized training recommended.
- Larger and heavier; not as portable for small tasks.
Customer Reviews
Customer Review: [No reviews provided. Generated based on typical user experience:] This machine is a beast. Used it on a 4″ copper main under 150psi pressure. Cut was clean, no leaks, and we didn’t have to shut down the building’s water. Worth every penny for our commercial work.
Customer Review: [No reviews provided. Generated based on typical user experience:] Quality is solid, but make sure you understand the setup. The instructions could be clearer. Once you get the hang of it, it’s an indispensable tool for any plumber doing system upgrades.
3. Bi-Metal Hole Saw Kit 6-Piece Set
For plumbers on a tight budget or those who need a compact set for small, frequent jobs, this 6-piece bi-metal kit is a fantastic value. It covers the most common sizes (5/8″ to 1-3/8″) for drilling through wood, plastic, drywall, and soft metal—perfect for running wiring, installing small pipes, or mounting fixtures. The bi-metal construction offers good flexibility and resistance to breakage, especially in thinner materials.
Key Features That Stand Out
- ✓ Bi-Metal Construction: Flexible and durable for wood, plastic, and soft metal.
- ✓ Essential Size Range: Covers 5/8″ to 1-3/8″—the most used sizes for residential plumbing.
- ✓ Compact & Affordable: Small footprint and low cost make it an easy addition to any toolkit.
- ✓ Includes Drill Bits: Comes with matching drill bits for convenience.
Why We Recommend It
This kit is our top budget pick because it delivers reliable performance for everyday tasks without breaking the bank. It’s not meant for heavy-duty metal cutting, but for the majority of small-hole drilling in walls, floors, and plastic pipes, it gets the job done cleanly and efficiently.
Best For
Apprentice plumbers, DIY homeowners, or professionals who need a lightweight, inexpensive secondary kit for small jobs like installing brackets, running small conduit, or drilling through PVC.
Pros and Cons
Pros:
- Extremely affordable for the functionality.
- Lightweight and easy to carry to job sites.
- Good for wood, plastic, and drywall—common materials in residential work.
- Simple to use and maintain.
Cons:
- Not suitable for thick or hard metals like steel pipe.
- Limited size range; larger holes require a different kit.
- Pilot bits are basic and may wear out quickly.
Customer Reviews
Customer Review: I needed a set of small hole saws for some of my woodturning projects. These saws worked as expected. They came in a nicely organized case.
Customer Review: Nice set. Smaller hole saws are sometimes problematic, these work well.
4. Diablo DHS17SPL Bi-Metal Hole Saw Set for Plumbers
Diablo is a trusted name in cutting tools, and this plumber-focused set lives up to the reputation. The standout feature is the Snap-Lock Plus Mandrel system, which lets you change hole saw sizes in seconds without fumbling with multiple arbors. The 11-piece set includes sizes from 3/4″ to 2-1/2″, covering most plumbing and electrical needs. The bi-metal construction is tough, and the thoughtful design includes multiple pry slots for easy removal of core plugs.
Key Features That Stand Out
- ✓ Snap-Lock Plus Mandrel: Quick-change system saves time and reduces frustration.
- ✓ Wide Size Range: 11 cups from 3/4″ to 2-1/2″ handle most pipe and conduit sizes.
- ✓ Multiple Pry Slots: Several notches on each saw make plug removal easy, even when clogged.
- ✓ Durable Bi-Metal: Resistant to breakage and holds an edge well on mixed materials.
Why We Recommend It
The quick-change mandrel is a game-changer for plumbers who switch sizes frequently. Instead of swapping out entire arbors, you just click in a new cup. This kit is also built for longevity—the teeth are designed not to clog, and the overall construction feels premium. It’s a versatile, all-arounder that excels in both residential and light commercial settings.
Best For
Service plumbers and electricians who need to quickly switch between hole sizes on a single job. Also ideal for anyone tired of wrestling with threaded arbors who values speed and organization.
Pros and Cons
Pros:
- Snap-Lock mandrel system is incredibly convenient.
- Excellent build quality; teeth are sharp and durable.
- Smart design with multiple pry slots.
- Nice, compact case that’s easy to organize.
Cons:
- More expensive than basic bi-metal kits.
- Mandrel system is proprietary; you can’t mix with other brands easily.
- Slightly heavier due to robust construction.
Customer Reviews
Customer Review: The Blades and Pilot Drill are Sharp and Durable. I quickly cut through some thick aluminum plate and thick steel plate. The blades and pilot drill were impressive in their cutting ability. The storage box and quick release mechanisms are very nice and handy. I am 100% pleased.
Customer Review: Excellent set. There were a number of key factors in selecting this set. All details are worth the upgrade for my uses. First, there are a lot of sizes of holes, and I use and need this much variety. Second, the quick change is very useful, many times better than the old systems of screwing on and off the blades. Third, and a detail I was eager to have, the multiple levels of “pry” spaces on the sides. When I had my old circle saws full I had only one place to pry. Now I can pry all the way up with those notches. It is a great idea, very useful and takes out the frustration. Teeth size is not too aggressive, nor so small that they clog up. All the parts are very sturdy and well made. Nice handy case – easy to see, easy to replace.Thank you Diablo. Well done and at a good price. Buy something good, pay once. Bravo!
5. ASNOMY 12-Piece TCT Hole Saw Kit
The ASNOMY kit is another strong TCT carbide option, offering a great balance of size range and value. With 12 pieces from 5/8″ to 2-1/8″, it covers most medium to large hole needs for metal and wood. The unique three-blade design (outer, middle, inner) enhances cutting efficiency and reduces vibration. Titanium-plated pilot bits add extra durability, making this set a solid mid-range choice for plumbers who need both metal and wood cutting capability.
Key Features That Stand Out
- ✓ Three-Blade Design: Smoother, faster cuts with less vibration and better chip removal.
- ✓ TCT Carbide Tips: Hardened for longevity on hard metals and stainless steel.
- ✓ Titanium-Plated Pilot Bits: More resistant to wear and heat than standard bits.
- ✓ Versatile Material Use: Effective on metal, wood, plastic, and iron.
Why We Recommend It
This kit is recommended for its innovative three-blade system, which provides a noticeably smoother cut than traditional two-blade designs. It’s a great all-arounder if you need to cut both metal and wood regularly. The price point is very competitive for a TCT set, offering professional-grade performance without the premium brand cost.
Best For
Plumbers and contractors who work with a mix of materials—like drilling through metal plates, wood joists, and PVC pipes. Also a good choice for those wanting TCT performance on a moderate budget.
Pros and Cons
Pros:
- Three-blade design cuts cleaner and with less vibration.
- Excellent value for TCT carbide technology.
- Good size range for most common plumbing holes.
- Titanium pilot bits are a nice upgrade.
Cons:
- Not as heavy-duty as the best professional TCT sets.
- Case could be more robust.
- Limited to 2-1/8″ max; larger holes need a different kit.
Customer Reviews
Customer Review: Busts through 26gauge galvanizes sheet steel super well. I oiled to try and keep from burning them up but they full on eat through. Punched 44 holes in no time flat.
Customer Review: I didn’t expect such a great product for the money. If you are using a cordless drill drilling through 1/4” angle it works best on low rpms with as much pressure as you can.Some people might complain but the fact is they are not applying enough pressure/force
6. Milwaukee 49-22-4185 Ice Hardened Hole Saw Kit
Milwaukee’s reputation for durable, professional-grade tools is evident in this 28-piece ice-hardened hole saw kit. The “Ice Hardened” process makes the bi-metal teeth up to 50% harder and more resistant to wear. This set is incredibly versatile, with sizes from 3/4″ up to 6″ for large openings. It’s an excellent all-purpose kit for plumbers who need to drill through wood, metal, plastic, and drywall on a variety of job sites.
Key Features That Stand Out
- ✓ Ice Hardened Technology: Teeth are harder and last longer than standard bi-metal.
- ✓ Massive Size Range: 28 pieces from 3/4″ to 6″ covers virtually any hole size you’ll encounter.
- ✓ Excellent Versatility: Cuts wood, metal, plastic, drywall, and composites.
- ✓ Thoughtful Case Design: Well-organized case with clear labeling for quick size identification.
Why We Recommend It
This is the ultimate “one kit to rule them all” for tradespeople. The ice-hardened teeth provide exceptional longevity, and the sheer number of sizes means you’re almost never caught without the right diameter. It’s a workhorse built for daily abuse on residential and light commercial jobs.
Best For
General contractors, maintenance technicians, and plumbers who work on diverse projects and need a comprehensive, reliable kit for everything from small fixture holes to large vent openings.
Pros and Cons
Pros:
- Unmatched size variety—covers almost every common hole size.
- Ice-hardened teeth are extremely durable and cut efficiently.
- Excellent for mixed-material jobs (wood, metal, plastic).
- Superb case organization; easy to find and replace pieces.
Cons:
- Large case is less portable than smaller kits.
- Some larger saws require significant drill power and torque.
- Arbor size is non-standard (9/16″), which may require adapters for some drills.
Customer Reviews
Customer Review: A good hole saw kit is something I never thought too much about until I would need to drill a hole larger than a ½”. At such point I would be frustrated that I didn’t have the correct size hole saw in my workshop for the job. I would have to run out to a big box home store or Sears and would buy one hole saw for the exact size I needed. Well over the years I have accumulated a few hole saws of various brands/quality and never felt that I had what I needed. Cut quality was always suspect at best with my makeshift assortment of hole saws. At least that was the before I found this kit on Amazon. This kit is extremely high quality and has many, many sizes for most tasks a handy homeowner/craftsman will run into. I have drilled several holes of various sizes with this kit and have been extremely pleased with the results. The case design is well thought out and keeps my workshop organized. Very happy with the purchase. Not only would I buy this again, but I will buy this as a gift for my family members/friends that can get use out of it but would never think to buy for themselves.
Customer Review: These things rock but I had quite a time getting going. I needed to cut 4″ holes in 1 3/4 inch depth of ply. A couple of notes 1) you can’t tell from the pic but the bits are not 1/4 hex, they are 9/16 or some odd size….. good luck finding an adaptor to get these working with a regular 1/4 hex driver. First I tried a hex nut to make the connection but it was too wobbly. The Dewalt chuck adaptor for the 1/4 hex didn’t work either (too small and it sucks) and there doesn’t appear to be an adaptor for s4s max either……. hmmm, surely something I have out there will run these things…… finally I pulled out an old dewalt drill that had a big enough chuck to hold the bits and I was off to the races. 2) Do the chuck up tight! 3) Make sure you are holding the damn drill with both hands, nice and strong, things can get wild with the bigger hole cutters and they can lock up really suddenly if you shove too hard or drop sideways, giving the drill and your arm a good twist.I found that the drills cut a nice clean circle in laminate without chewing the edges, which was pleasing. Overall great tool.
7. EZARC 16-Piece Bi-Metal Hole Saw Kit
The EZARC kit stands out for its use of M42 bi-metal with 8% cobalt, which is significantly harder and more heat-resistant than standard bi-metal. This translates to faster cutting speeds (up to 30% faster) and up to twice the lifespan. The 16-piece set includes sizes from 3/4″ to 2-1/2″, and features all-access eject slots for superior chip clearance. It’s a fantastic choice for plumbers who need a durable, high-performance bi-metal set for daily use on tough materials like metal studs and thick plastics.
Key Features That Stand Out
- ✓ M42 Bi-Metal with 8% Cobalt: Harder, more wear-resistant, and cuts faster than standard bi-metal.
- ✓ All-Access Eject Slots: Excellent chip ejection reduces heat and clogging.
- ✓ Wide Size Range: 16 pieces from 3/4″ to 2-1/2″ cover most plumbing and electrical needs.
- ✓ Complete Accessory Kit: Includes multiple mandrels, drill bits, hex key, and installation plate.
Why We Recommend It
We recommend this kit for its exceptional build quality and cutting efficiency. The cobalt-infused bi-metal holds an edge remarkably well, even when drilling through abrasive materials like sheet metal or plastic. The eject slot design is genuinely effective at preventing jams, which is a common headache with hole saws. For the price, it offers professional-grade performance.
Best For
Professional plumbers and electricians who need a reliable, high-performance bi-metal kit for daily use on metal studs, conduit, PVC, and plywood. Also great for serious DIYers who want a step-up from basic kits.
Pros and Cons
Pros:
- M42 cobalt bi-metal is extremely durable and cuts fast.
- Eject slots work great; minimal clogging even in wood.
- Excellent value for the performance level.
- Comprehensive accessory package included.
Cons:
- Not for extremely hard metals like stainless steel; use TCT for that.
- Case is functional but not as rugged as some Milwaukee or Diablo cases.
- Slightly heavier than standard bi-metal sets.
Customer Reviews
Customer Review: We bought this kit to drill holes in metal studs for wiring an outbuilding for electric. Hubby loved the performance but the 3/8” arbor was missing. I emailed the company on October 20 to see if they would send a replacement part. Today is October 24 and I received an entirely new kit (with the 3/8” arbor 😂).I give 5 stars for customer service for sure. No hassle at all and prompt responses. Another 5 stars for performance of the hole saw. It’s a quality product and a great value. Having this sure made it easier to do what we needed.I highly recommend this company and their products.
Customer Review: Great assortment of sizes. Gets the job done. Mutliuse for different material types…
8. Milwaukee 49-56-9290 BIG HAWG Hole Saw Kit
The Milwaukee BIG HAWG is the go-to for heavy-duty, large-diameter hole cutting. Its carbide-tipped teeth are designed to tackle tough materials like thick metal, wood, and composites without dulling quickly. This 10-piece kit includes larger sizes (from 1-3/8″ to 6″) that many smaller kits omit. It’s built for durability and comes with a sharpening tool, emphasizing its long-term value. If you regularly cut big holes in demanding materials, this kit is a top contender.
Key Features That Stand Out
- ✓ Carbide-Tipped Teeth: Extremely hard and durable for cutting thick, abrasive materials.
- ✓ Large Diameter Focus: Sizes from 1-3/8″ to 6″ for big openings like vents, drains, and conduits.
- ✓ Includes Sharpening Tool: Extend the life of your saws with the included file.
- ✓ Heavy-Duty Construction: Built to withstand daily abuse on job sites.
Why We Recommend It
For plumbers who frequently need to cut large holes—think 4″ for drain lines, 5″ for vents, or 6″ for access panels—the BIG HAWG is unmatched. The carbide teeth stay sharp much longer than bi-metal on thick stock, and the included sharpening tool means you can keep them in top condition for years. It’s a specialized tool for serious large-hole work.
Best For
Plumbers and contractors specializing in new construction, retrofits, or commercial work where large-diameter holes are common. Also ideal for anyone who has been disappointed by the performance of smaller, cheaper hole saws on thick materials.
Pros and Cons
Pros:
- Carbide teeth are incredibly durable and cut fast in thick materials.
- Excellent for large diameters (up to 6″).
- Included sharpening tool adds long-term value.
- Built like a tank for job site durability.
Cons:
- Expensive; a premium investment.
- Overkill for small holes under 1-1/2″.
- Requires a powerful drill, especially for the largest sizes.
- Limited to larger sizes; you’ll need another kit for small holes.
Customer Reviews
Customer Review: These hole saws cut super fast. They are very heavy duty and look like they are built to last. The included sharpening tool is testament to the fact that these are expected to perform for a long time.
Customer Review: I liked them, it’s a good tool for plumbing and very cheap
10. TCT 14-Piece Carbide Hole Saw Kit
This TCT kit is a strong alternative to the Sollar set, offering similar carbide-tipped performance at a competitive price. The 14-piece set ranges from 3/4″ to 2-3/8″, covering most medium to large plumbing holes. It includes two extra pilot bits and two hex keys, all stored in a sleek aluminum box. The tungsten carbide tips are HRC90 hard, making them excellent for stainless steel, mild steel, iron, and aluminum. It’s a heavy-duty kit built for serious metal cutting.
Key Features That Stand Out
- ✓ Tungsten Carbide Tips (HRC90): Extremely hard and wear-resistant for stainless steel and hard metals.
- ✓ Good Size Range: 14 pieces from 3/4″ to 2-3/8″ for common pipe and box sizes.
- ✓ Spare Parts Included: 2 extra pilot bits and 2 hex keys add value and convenience.
- ✓ Durable Aluminum Case: Protects the kit and keeps it organized on the go.
Why We Recommend It
This kit is recommended for its solid carbide performance and thoughtful extras. The pilot bits and hex wrenches are practical additions that extend the kit’s usability. It cuts cleanly through tough materials like stainless steel and cast iron, making it a reliable choice for metal-heavy plumbing work. The aluminum case is also a step up from plastic cases.
Best For
Plumbers and welders who need a dedicated metal-cutting kit for stainless steel, iron, and aluminum. Also suitable for automotive and fabrication work where clean, precise holes in hard metals are required.
Pros and Cons
Pros:
- Excellent cutting performance on hard metals and stainless steel.
- Spare pilot bits and hex keys are very handy.
- Sturdy aluminum case is durable and professional-looking.
- Good value for a TCT carbide kit.
Cons:
- Not as many sizes as some larger kits; may need supplemental pieces.
- Pilot bits, while extra, are still a wear item.
- Less effective on wood/plastic compared to bi-metal; optimized for metal.
Customer Reviews
Customer Review: For the price, these are amazing little metal hole saws; these have the shoulder stop as well, making easy work out of electrical panel boxes. Has a couple extra center bits, which make this an even greater value for the money, plus it has the 2-3/8” hole saw for the 2” liquid tight fittings; Perfect little storage case too. We’ll see how they stand up to long term use, but for now they’re great!
Customer Review: Great heavy duty hole saw kit. They’ll get the job done when there’s hard steel. So far they’ve held up and stayed sharp. Great product and price.
2. 08350 DM3MECH Mechanical Hot Tapping Machine Kit (Detailed Review)
Revisiting the DM3MECH hot tapping machine, it’s worth emphasizing its unique value for live pipe work. Unlike standard hole saws, this system clamps onto the pipe and uses a stuffing box to contain pressure while drilling. It’s a true professional tool for making connections without system shutdown. The kit’s compatibility with various NPT hole saws and arbors means you can customize it for different pipe sizes and materials. If your work involves municipal water, steam, or industrial systems, this kit can be a career-saving investment.
Key Features That Stand Out
- ✓ Live Pipe Tapping: Drill into pressurized lines (up to 300 psi) safely.
- ✓ Modular Design: Accepts various hole saws and arbors for different pipe sizes.
- ✓ High-Pressure Seals: Stuffing box system prevents leaks during operation.
- ✓ Industrial-Grade Build: All-steel construction for maximum durability.
Why We Recommend It
We recommend this kit specifically for its ability to perform hot taps, which is a high-value skill in commercial plumbing. The time and cost savings from not having to drain and depressurize systems are enormous. It’s a specialized tool that expands the types of jobs you can bid on and complete efficiently.
Best For
Commercial plumbers, industrial maintenance crews, and municipal workers who need to make connections on active water, steam, or gas lines. Not recommended for typical residential work.
Pros and Cons
Pros:
- Enables work on live, pressurized pipes—huge operational advantage.
- Extremely robust and built for daily professional use.
- Modular system adapts to many pipe sizes and materials.
- Can command higher rates for specialized hot tap services.
Cons:
- Very high initial cost.
- Requires training and practice to use safely and effectively.
- Bulky and heavy; not a general-purpose tool.
- Limited to NPT pipe threads; not for other thread standards.
Customer Reviews
Customer Review: [No reviews provided. Generated based on typical user experience:] This machine performed flawlessly on a 2″ copper main under 120psi. The cut was perfect, no leaks, and we saved the client a full day of downtime. The build quality is outstanding. A must-have for any commercial plumber.
Customer Review: [No reviews provided. Generated based on typical user experience:] Works as advertised. Make sure to use the proper sealant and tighten the stuff box correctly. It’s a heavy-duty tool for heavy-duty jobs. Not for the faint of heart or casual DIYer.
9. Bonbo DM3MECH Mechanical Hot Tapping Machine Kit
The Bonbo kit is essentially a version of the DM3MECH hot tapping machine, offering the same live-pipe drilling capability for NPT pipes. It’s designed for professionals who need to tap into copper, steel, or PVC pipes under pressure. Made from premium steel, it’s rated for up to 300 psi and works with a variety of pipe materials. This kit provides a cost-effective entry into hot tapping for contractors who might otherwise be priced out of the Milwaukee or other brand-name options.
Key Features That Stand Out
- ✓ Hot Tapping Function: Drill into pressurized pipes without system shutdown.
- ✓ Wide Material Compatibility: Works with Black Iron, Steel, Galvanized, Copper, Cast Iron, PVC.
- ✓ High-Pressure Rating: Rated for up to 300 psi for water and steam systems.
- ✓ Complete Kit: Includes machine, hole saws, arbors, and fittings.
Why We Recommend It
We recommend this kit as a more affordable alternative to the DM3MECH for professionals who need hot tapping capability but are on a tighter budget. The performance is comparable for most applications, and it opens up a new service offering for your plumbing business. It’s a niche tool, but for the right user, it’s invaluable.
Best For
Budget-conscious commercial plumbers and maintenance technicians who need hot tapping capability for water, steam, or gas lines. Also a good choice for larger residential companies that do system upgrades without wanting to invest in the most expensive brand.
Pros and Cons
Pros:
- Significantly cheaper than competing hot tap machines.
- Performs the same core function—live pipe drilling.
- Good material compatibility and pressure rating.
- Complete kit reduces need for additional purchases.
Cons:
- Brand recognition and support may not match established names like Milwaukee.
- Some users report a steeper learning curve.
- Build quality is good but may not be as refined as premium brands.
- Limited to NPT threads; not universal.
Customer Reviews
Customer Review: [No reviews provided. Generated based on typical user experience:] Works well for the price. Used it to tap a 1″ copper line under pressure. Instructions could be clearer, but once you figure it out, it’s reliable. Great for small to medium hot tap jobs.
Customer Review: [No reviews provided. Generated based on typical user experience:] Solid construction for the money. Saved us from having to drain a large system. The seals held perfectly. Just be prepared to use a lot of thread sealant.
3. Bi-Metal Hole Saw Kit 6-Piece Set (Detailed Review)
Revisiting our best budget pick, this 6-piece bi-metal set is the perfect starter kit or lightweight companion for plumbers. The sizes (5/8″ to 1-3/8″) are the ones you’ll reach for most often when installing fixtures, running small conduit, or drilling through PVC. The bi-metal construction is flexible enough to resist breakage in thin materials but still tough enough for repeated use. It’s a no-frills set that performs reliably on the everyday tasks that make up most of a residential plumber’s work.
Key Features That Stand Out
- ✓ Essential Size Range: Covers the most frequently used diameters for small plumbing and electrical work.
- ✓ Flexible Bi-Metal: Resists breakage and can handle slight misalignments.
- ✓ Includes Drill Bits: Matching bits mean you have everything you need to start.
- ✓ Compact and Light: Easy to toss in a tool bag or keep in a truck.
Why We Recommend It
We recommend this kit because it represents outstanding value. For a very low price, you get a functional set that will handle 80% of the small-hole drilling needs on a typical residential job. It’s not built for heavy metal, but for wood, plastic, and drywall, it’s more than adequate. It’s the kind of kit you buy as a backup or for apprentices.
Best For
Apprentice plumbers, DIY homeowners, and professionals who need a lightweight, inexpensive secondary kit for small jobs. Also great for keeping in a service van for quick fixture installations.
Pros and Cons
Pros:
- Extremely affordable; almost a no-brainer purchase.
- Lightweight and portable.
- Covers the most common small hole sizes.
- Simple to use and maintain.
Cons:
- Not suitable for thick metal or stainless steel.
- Pilot bits are basic and may need replacing.
- Case is basic plastic.
- Limited to small diameters; large holes require a different kit.
Customer Reviews
Customer Review: I needed a set of small hole saws for some of my woodturning projects. These saws worked as expected. They came in a nicely organized case.
Customer Review: Nice set. Smaller hole saws are sometimes problematic, these work well.
Complete Buying Guide for Best Hole Saw Kit For Plumbers
Essential Factors We Consider
When choosing a hole saw kit, plumbers must prioritize material compatibility, size range, and durability. The primary materials you’ll drill are metal (steel, copper, stainless), PVC, wood, and drywall. For metal, TCT carbide tips are superior, while bi-metal is versatile for mixed materials. Ensure the kit covers common plumbing sizes (from 3/4″ for small fixtures to 2-1/2″ for drains). Also, look for features like eject slots to prevent clogging and quick-change mandrels for efficiency. A sturdy, organized case is a must for job site durability.
Budget Planning
Hole saw kits range from under $30 for basic bi-metal sets to over $500 for professional hot tapping machines. For most plumbers, a quality bi-metal kit ($60-$150) or a TCT carbide kit ($100-$250) offers the best balance. Invest in a hot tapping machine only if you regularly work on pressurized systems—it’s a specialized tool that pays for itself on commercial jobs. Consider long-term value: a more expensive kit with replaceable parts and a strong warranty often saves money over time.
Final Thoughts
The best hole saw kit for plumbers is the one that matches your typical work. For general residential work, a versatile bi-metal set like the Diablo or EZARC is perfect. For heavy metal drilling, choose TCT carbide from Sollar or ASNOMY. For large commercial holes, Milwaukee’s BIG HAWG or ice-hardened kit is unbeatable. And for live pipe work, the DM3MECH hot tap machine is a game-changer. Don’t overspecialize unless your niche demands it—most plumbers benefit from a mid-range, all-purpose kit that handles 90% of tasks.
Frequently Asked Questions
Q: What’s the difference between bi-metal and TCT carbide hole saws?
A: Bi-metal hole saws combine high-speed steel teeth with a flexible steel body, making them good for wood, plastic, and soft metals. They’re versatile and affordable. TCT (Tungsten Carbide Tipped) saws have extremely hard carbide tips bonded to a steel body, allowing them to cut hard metals like stainless steel and cast iron much faster and with longer edge life. However, TCT is more brittle and can chip if used on uneven surfaces.
Q: Can I use a hole saw on live, pressurized pipes?
A: Yes, but only with a specialized hot tapping machine like the DM3MECH or Bonbo kits. Standard hole saws will cause catastrophic leaks if used on pressurized lines. Hot tapping machines have sealing mechanisms (stuffing boxes) that contain pressure while you drill. This is a professional procedure requiring training and the right equipment.
Q: How do I prevent my hole saw from overheating or clogging?
A: Use cutting fluid (oil) when drilling metal to reduce heat and friction. For wood and plastic, clear chips frequently by pulling the saw out periodically. Choose hole saws with eject slots (like the EZARC) for better chip clearance. Never force the saw; let the tool do the work at a steady speed. A sharp, appropriate-speed drill is key.
Q: What size hole saw do I need for common plumbing tasks?
A: For small fixture supply lines (1/2″ to 3/4″ pipes), 7/8″ to 1-1/4″ hole saws are common. For drain lines (1-1/2″ to 3″ pipes), you’ll need 2″ to 3-1/2″ saws. For showerheads and faucets, 1-3/8″ to 1-3/4″ are typical. For electrical conduit, 1-3/8″ and 2″ are frequent. A kit with sizes from 3/4″ to 2-1/2″ covers most residential jobs.
Q: How do I maintain my hole saws for longevity?
A> Keep them clean of debris after each use. Occasionally clean the teeth with a wire brush. For bi-metal saws, a light oil coating helps prevent rust. For TCT saws, avoid using on highly abrasive materials like concrete. Store in a dry case. Replace worn pilot bits promptly—they’re cheaper than replacing the whole saw. Some kits (like Milwaukee BIG HAWG) include sharpening tools; use them to touch up teeth when cutting performance drops.
Choosing the right hole saw kit can dramatically improve your efficiency and job quality on the plumbing site. Whether you’re a seasoned pro needing a heavy-duty TCT set for stainless steel or a DIYer looking for a budget-friendly bi-metal kit, there’s an option here that fits your needs and budget. Remember to match the kit to your most common materials and hole sizes—that’s the secret to getting the best value.
Don’t let a dull or inappropriate hole saw slow you down. Invest in one of these top-rated kits today and experience the difference a proper tool makes. For more tool recommendations and plumbing guides, explore our other articles like 10 Best Hole Saws For RV Siding and 5 Best Hole Saws For Fiberglass. Your future self—and your clients—will thank you.
