Quality Industrial Abrasives and Tools | Benchmark Abrasives

3-1/8" Bi-Metal Holesaw

3-1/8" Bi-Metal Holesaw - Main image
$6.97 $9.96 In stock

Category: Hole Saw

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Product Specification

3-1/8" (80MM) BI-METAL HOLESAW

Benchmark Abrasives 3-1/8" Bi-Metal Hole saws are MADE IN USA.  Constructed from durable bi-metal for high-performance cutting power, the 4/6 TPI (teeth per inch) and positive rake angle, delivers fast, clean cuts ideal for use on 2” x 4” wood board planks.  Side cut outs make removal of debris and plugs a breeze.

This shock resistant and shatter resistant bi-metal blade provide unmatched durability and strength.  These blades have a cobalt cutting edge laser-welded to a steel alloy backing.  

Quantity: 1 piece

Use in combination with our hole saw mandrels

**Mandrel sold separately**

Dimensions

  • Outer Diameter – 3-1/8” (80mm)
  • Arbor Diameter – 5/8”-18 THR
  • Cutting Depth – 1-1/2”
  • Teeth Per Inch (TPI) – 4/6 variable pitch

Machines Used On:

  • Electric Powered Rotary Drills 

Application:

  • Wood, Ferrous metals, non-ferrous metals, wood composites, plastics, rubber, drywall/sheetrock etc.

Safety Tips/techniques:

  • Use with arbors – 3/8” shank 5/8”-18 THR and 7/16” shank 5/8"-18 THR
  • Always wear proper PPE to include (but not limited to) safety glasses, hearing protection, respirator, and hand protection.  Keep all guards in place on your machine.
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Carter Q. ★★★★★

I've been cutting into thick steel plates, and this bi-metal hole saw holds its edge much longer than the cheap ones I used before. The 3-1/8" diameter was perfect for installing a new lock set, and it stayed true even through tough spots.

Eva I. ★★★★★

Had to bore through some hefty aluminum threshold plate and this bi-metal blade chewed through it without any binding or slowdown. The 80mm size was spot on for the conduit I was running, and the teeth are still looking sharp.

Hazel ★★★★☆

Cut through a 3-1/8" hole in a steel door frame without much effort, and the bi-metal teeth still look sharp afterward. Took a bit of patience to get it started square, but once it bit, it was smooth. Solid buy for the price.