Hole Saw Kit Bi Metal 22 PCS Hole Saw Set - Clean Cuts for Metal

Our review of the Hole Saw Kit Bi Metal looks at whether this 22-piece set is a practical choice for DIYers and tradespeople who need a range of hole sizes without buying individual saws. The bottom line: it is best for someone who values variety and portability - the included 12 hole saw blades from 3/4' to 2-1/2', plus mandrels, pilot bits and an adapter, make it a ready-to-go kit for cutting metal, wood and plastic. The kit's bi-metal construction and spiral chip flute design are the single biggest reasons to buy if you want longer blade life and cleaner chip ejection than basic stamped saws.

Key Features

• Complete size range: The set includes 12 hole saw blades from 3/4' (19mm) to 2-1/2' (64mm) so users can tackle a wide range of hole diameters without stops for extra purchases.
• Bi-metal construction: A flexible steel saw body with high-speed steel cutting teeth gives higher hardness and better wear resistance than simple carbon blades, extending service life.
• Spiral chip flute design: Circular spiral flutes remove chips in all directions for smoother cutting and reduced clogging on metal and plastic work.
• Complete accessory kit: Two mandrels, two hex keys, an adapter, a spring, an extension rod and three spare pilot bits make installation and maintenance straightforward on the job.
• Portable storage case: A molded case keeps every item in its own slot for easy organization and transport to job sites or around the workshop.

Who It's For

This kit is ideal for homeowners, hobbyists and light tradespeople who need a versatile hole saw set for installing fixtures, running pipes or creating openings in sheet materials. The variety of sizes covers most common tasks such as plumbing and electrical passthroughs, speaker installs and cabinet hardware.

It is less suitable for heavy production cutting or contractors who demand repeated, high-volume cuts in very hard alloys; a dedicated heavy-duty industrial set or carbide tipped saws may be a better long-term choice for those users.

Pros & Cons

Pros

• Wide size selection in one kit reduces the need to buy separate blades.
• Bi-metal teeth and spiral flutes improve durability and chip removal for cleaner holes.
• Accessories and spare pilot drills make the kit usable out of the box.

Cons

• Build quality reports are mixed; some users may find teeth dull after heavy use and occasional breakage under extreme loads.
• The set is aimed at general purpose work rather than industrial high-volume cutting.

Specifications

Our Verdict

The GMTOOLS Hole Saw Kit Bi Metal is a practical, value-oriented option for DIYers and light trade work because it combines a broad size range, HSS teeth and chip-clearing flutes in a convenient case. It offers good value when you need variety and portability, though those requiring heavy industrial endurance should consider higher-duty alternatives.

Frequently Asked Questions

Can these hole saws cut metal?
Yes, the bi-metal construction with HSS cutting teeth is intended for use on sheet metal, aluminum and similar metals as well as wood and plastic.

Are replacement pilot bits included?
Yes, the kit includes three spare pilot drill bits for replacement and accurate positioning.

Is everything stored in one case?
Yes, the set comes with a custom storage case with designated slots for each blade and accessory for easy transport.