Best Hole Saws for Impact Drivers: Top Picks for Metal and DIY Projects
The best hole saw for an impact driver has a compatible quick-change hex shank and teeth suited to the material you plan to cut. The GEINXURN set is best for buyers who want three sizes in one kit; the KATA M42 kit suits thin-metal and PVC work; and the Bosch 7/8-inch saw is a focused choice for sheet metal. BULLITT offers smaller openings, while Maycraft includes sizes for common electrical and home projects.
| Product | Best For | Sizes Or Coverage |
|---|---|---|
| GEINXURN 4-piece set | Multi-size general use | 7/8, 1-1/8, 1-3/8 inches |
| KATA M42 kit | Thin metal and PVC | Three-piece kit; sizes not specified in supplied details |
| Bosch HTW78 | Single-size sheet-metal cuts | 7/8 inch |
| BULLITT 3-piece set | Smaller metal openings | 25/32, 1, 1-1/4 inches |
| Maycraft 4-piece set | Electrical and home projects | 7/8, 1-1/8, 1-3/8 inches |
GEINXURN M42 Thinwall Hole Saw Set
This set includes 7/8-, 1-1/8-, and 1-3/8-inch hole saws, plus arbors with drill bits and a hex key. Its M42 bi-metal construction is listed for thin metal, wood, PVC, and drywall. The 1/4-inch quick-change hex shank is designed to fit standard drills and impact drivers.
Best for: Buyers who want three common diameters for mixed household or installation work. It was selected for its range of sizes and stated impact-driver compatibility. Limitation: The supplied details do not specify a maximum metal thickness, so confirm the material is appropriate for a thin-wall saw before cutting.
KATA M42 Kit For Thin Metal And PVC
KATA describes this three-piece M42 bi-metal kit as suitable for impact drivers and drills. It is intended to cut plastic, PVC, and thin-gauge metal up to 1/8 inch. The 8-TPI tooth design is specified for cleaner cuts with less grabbing and edge cleanup, and the quick-change 1/4-inch hex shank supports switching between sizes.
Best for: Electricians, plumbers, HVAC workers, and DIYers making openings in thin sheet metal or plastic panels. Junction boxes, conduit openings, and PVC are among the listed applications. Limitation: The provided product details do not identify the three diameters, so check the size information before choosing it for a specific opening.
Bosch HTW78 7/8-Inch Impact Hole Saw
The Bosch HTW78 is a single 7/8-inch Edge Impact Tough hole saw with bi-metal 8-TPI teeth. Bosch lists it for sheet metal and describes it as built for clean, fast cuts with high-torque impact drivers. The product information also states that its design delivers twice the life of a standard impact-rated hole saw.
Best for: Buyers who know they need a 7/8-inch opening in sheet metal and prefer a single-size tool rather than a kit. Limitation: It covers only one diameter, so it is less useful when a project requires several hole sizes.
BULLITT M42 Set For Smaller Metal Holes
This three-piece set provides 25/32-, 1-, and 1-1/4-inch hole saws in a tin storage box. The manufacturer lists M42 high-speed steel with 8% cobalt, 6–10 TPI teeth, and an internal spring intended to help clear material during drilling. Its stated applications include thin metal, stainless steel, and aluminum.
Best for: Buyers who need smaller openings in metal and want several diameters together. It was selected for its stated cobalt-tooth construction and size range. Limitation: The product details do not give a maximum material thickness; verify the workpiece is within the saw’s intended thin-material use.
Maycraft Bi-Metal Set For Electrical Work
Maycraft lists three hole saw sizes: 7/8, 1-1/8, and 1-3/8 inches. The set is made from bi-metal and includes a high-speed steel center drill with a spring, along with a double-ended PH2 impact screwdriver bit. The maker describes the saws as suitable for wood, drywall, PVC, and thin metal.
Best for: Buyers working on electrical installation or home decoration who need these three opening sizes. The included screwdriver bit may also be useful during installation tasks. Limitation: The product details do not state a maximum metal thickness, and the listed size range may not suit openings outside these three diameters.
Buying Guide: How To Choose A Hole Saw For An Impact Driver
Does the shank fit your impact driver?
Check for a 1/4-inch hex shank or another shank explicitly described as compatible with impact drivers. A quick-change hex connection makes installation and size changes straightforward. Do not assume every hole saw arbor is designed for impact use just because it fits a drill.
What material and thickness will you cut?
Match the tooth material and product guidance to the workpiece. M42 bi-metal saws in this selection are described for thin metal, PVC, or plastic; some are also listed for wood and drywall. The KATA M42 kit specifies thin-gauge metal up to 1/8 inch. Do not apply that thickness limit to other models unless their product details state it.
Which diameters does the job require?
Compare the listed sizes with the required opening before buying. Multi-size kits suit projects with repeated or varied hole dimensions, while the Bosch HTW78 is a clear fit when a 7/8-inch saw is all that is needed. A product’s number of pieces does not necessarily indicate its diameters; check the listing when sizes are not provided in the supplied details.
What else should you check?
Look for included arbors, pilot bits, storage cases, and any stated debris-clearing features if those matter to your work. Use the saw only on materials named by its manufacturer, and follow the tool and accessory instructions. Choose a saw based on material, opening size, and impact-driver compatibility rather than assuming a general-purpose kit handles every surface.
Frequently Asked Questions
Can a hole saw be used with an impact driver?
Yes, if the hole saw or arbor is specifically designed for impact drivers and has a compatible shank. The products above include models described as impact-driver compatible.
Are impact hole saws suitable for thick steel?
The selected products are described mainly for thin-gauge metal or sheet metal. Check each manufacturer’s material and thickness guidance; do not assume these saws are suitable for thick steel.
What does 8 TPI mean?
Eight TPI means the saw has eight teeth per inch. Several listed models specify 8-TPI teeth and describe them as intended to support clean cutting in their recommended materials.
Should I choose a set or a single hole saw?
Choose a set when you need multiple diameters for a project or future work. Choose a single-size saw when you know the required opening and want a focused option, such as the Bosch 7/8-inch model.