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Cylindrical bi-metal hole saw with toothed edge and shank

BLU-MOL

BLU-MOL 570 Bi-Metal Hole Saw 4-3/8" 1-7/8" Depth

SKU CH-5NK1-K1KNZ

A bi-metal hole saw with 1-7/8 inch cutting depth for clean holes in metal and wood

  • Bi-metal construction resists heat and wear for longer cutting life
  • 1-7/8" cutting depth handles thick material in a single pass
  • 4-3/8" diameter suits large pipe and conduit openings
  • Impact-rated shank withstands high-torque cordless tools
  • Model 570 identifies the saw for quick reordering

Bi-Metal Hole Saw 570

The BLU-MOL 570 bi-metal hole saw cuts holes up to 4-3/8 inches in diameter with a 1-7/8 inch cutting depth. It is built for electricians, plumbers and metalworkers who need clean holes in steel, stainless steel, cast iron and non-ferrous metals. The HSSE-Co8 cobalt matrix teeth resist wear when drilling tough alloys. This accessory fits standard arbors for corded or cordless drill motors.

Sustained cutting in thick metal

The cobalt-enhanced tooth geometry dissipates heat during continuous drilling, reducing tooth stripping when working through 1-7/8 inch material. Steady feed pressure and cutting fluid extend blade life in stainless steel and heavy plate. The bi-metal construction absorbs vibration, keeping the cut true without wandering. Impact-rated use is not supported, so rotary-only operation is required.

Upgrading from carbon-steel saws

Users replacing carbon-steel hole saws gain longer tooth life and faster material removal in hard metals. The jump is worth it when cutting stainless, tool steel or abrasive composites that dull conventional blades quickly. It does not suit wood-only applications where a dedicated wood cutter removes chips faster. Buyers needing impact-driver compatibility should select a different model.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 64% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameBLU-MOL

Questions about this item

How much heat does the BLU-MOL 570 generate during extended drilling?

The bi-metal construction with HSSE-Co8 steel dissipates heat effectively during prolonged cutting, reducing tooth wear and maintaining cutting speed through metal and wood.

What arbor or shank does the BLU-MOL 570 require to operate?

This hole saw uses a standard threaded mounting system compatible with common arbors and pilot drills, so it fits directly onto most drill chucks or impact drivers.

Will the BLU-MOL 570 work with my older corded drill?

Yes, the 570 mounts on any drill with a compatible arbor, delivering clean cuts in steel, stainless steel, and wood regardless of the drill's age or power rating.

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