Best Bimetal Hole Saw Kits for Home, Workshop, and Repair Projects
The best bimetal hole saw kit depends on the sizes you need, the materials you plan to cut, and whether you value a larger accessory selection or a specialty feature. HYCHIKA offers an 11-size range with a 40 mm cutting depth, LifeIdeas includes 12 saw sizes and extra accessories, and EZARC uses M42 bi-metal with 8% cobalt. KATA is aimed at common household jobs, while Diablo stands out for its deep-cut capacity and quick-change system.
| Kit | Best For | Standout Detail |
|---|---|---|
| HYCHIKA | Common-size cutting | 11 saws and 40 mm maximum depth |
| LifeIdeas | More size options and accessories | 12 saws plus extension rod and adapter |
| EZARC | Buyers seeking M42 steel | 8% cobalt bi-metal construction |
| KATA | Home and garage repairs | Common sizes in a portable case |
| Diablo | Deeper cuts and faster changes | 2-3/8-inch cutting depth |
HYCHIKA 17-Piece Bi-Metal Hole Saw Kit
Best for: DIYers who want a useful range of common hole sizes for metal, PVC board, and plastic. The 11 saws cover 19 mm to 68 mm, and the set includes two mandrels, three replacement drill bits, and a hex key.
The manufacturer lists a maximum cutting depth of 40 mm and describes the teeth as optimized for cutting and chip removal. The kit’s side grooves are intended to help clear chips while drilling. Its size spread suits varied small-to-medium hole tasks without requiring buyers to assemble components separately.
Limitation: The listed material range does not specifically include wood, so choose another option if wood cutting is a central requirement.
LifeIdeas 22-Piece Bi-Metal Hole Saw Kit
Best for: Buyers who want 12 saw sizes and a broad set of included accessories. The sizes range from 19 mm to 64 mm. The listing also specifies two mandrels, two hex keys, an adapter, a spring, an extension rod, and three drill bits.
LifeIdeas lists metal, PVC board, wood, plastic, and drywall among the intended materials. Its high-speed-steel bi-metal construction and range of saw sizes make it a flexible choice for users who expect to switch between materials and hole diameters.
Limitation: The product listing does not give a cutting-depth figure. Confirm that its capacity suits the thickness of the material you need to cut.
EZARC 16-Piece M42 Bi-Metal Hole Saw Kit
Best for: Buyers prioritizing M42 bi-metal construction with 8% cobalt. The kit includes 10 saws, arbors in 3/8-inch and 7/16-inch sizes, and pilot drills. Its stated applications include thin metal, softwood, plywood, plastic sheets, drywall, and PVC boards.
The listing describes a 4/6 TPI variable tooth pitch and all-access eject slots intended to help with chip clearance. Choose this set if those construction details and its specified material range match your project. The saw sizes span 3/4 inch to 2-1/2 inches.
Limitation: The stated material guidance focuses on thin metal and softer building materials; the listing does not establish suitability for every metal thickness or type.
KATA 18-Piece Bi-Metal Hole Saw Kit
Best for: Homeowners and repair workers drilling common holes in wood, plywood, drywall, PVC, plastic, or thin metal. Its 11 saws range from 3/4 inch to 2-1/2 inches, and the set includes mandrels, drill bits, a hex key, and a portable case.
KATA specifies M42 bi-metal construction and describes the teeth as designed for faster, cleaner cutting. For metal, the product guidance recommends low drill speed, light pressure, and cutting oil to help control heat. This makes the set a practical option when a buyer wants material-specific guidance included.
Limitation: The listed metal use is thin sheet; this is not described as a kit for thick metal stock.
Diablo General-Purpose Bi-Metal Hole Saw Set
Best for: Users who prioritize deeper single-pass cutting and quick hole-saw changes. The set includes 10 saw cups, a Snap-Lock Plus mandrel, a pilot bit, and two adapter nuts. Its listed cutting depth is 2-3/8 inches.
The Snap-Lock Plus system is designed for quick changes, and the listing says the mandrel fits Diablo hole saws from 5/8 inch to 6 inches. Choose this set if depth and compatibility within that system matter more than having a listed assortment of common sizes in the kit description.
Limitation: The supplied saw-cup diameters are not specified in the provided product details, so check the included sizes before choosing it for a particular hole.
Buying Guide: How To Choose A Bimetal Hole Saw Kit
Which sizes do you need?
Compare the listed diameter range with the holes your project requires. LifeIdeas includes 12 sizes from 3/4 inch to 2-1/2 inches; HYCHIKA lists 11 sizes from 19 mm to 68 mm. A broad assortment is useful only if it includes the diameter you need, so check the size list rather than relying on the piece count.
What materials will you cut?
Match the manufacturer’s stated material range to your work. LifeIdeas lists metal, PVC board, wood, plastic, and drywall. KATA lists wood, plywood, drywall, PVC, plastic, and thin metal, with specific advice to use low speed, light pressure, and cutting oil for metal. Do not assume every bi-metal kit is intended for every metal or thickness.
Do cutting depth and accessories matter?
Check depth when drilling thick material or when a deeper cut in one pass is important. HYCHIKA lists a 40 mm maximum depth, while Diablo specifies 2-3/8 inches. Compare included mandrels, pilot bits, replacement drills, adapters, and storage cases as well. These components can affect convenience, but they do not replace checking tool fit and project requirements.
Frequently Asked Questions
What does bi-metal mean in a hole saw?
Bi-metal describes a hole saw made with two types of metal. The specific construction varies by product; EZARC, for example, identifies its kit as M42 bi-metal with 8% cobalt.
Can a bi-metal hole saw cut wood?
Some kits list wood as a compatible material. LifeIdeas and KATA include wood in their stated applications, but always follow the product’s material guidance.
Which kit lists the greatest cutting depth?
Diablo lists a 2-3/8-inch cutting depth. HYCHIKA lists a maximum depth of 40 mm.
What should I check before cutting metal?
Confirm that the kit is specified for the metal and thickness involved. For KATA’s listed thin-metal use, the manufacturer recommends low speed, light pressure, and cutting oil.