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Irwin Marples 1-3/8 in. X 4 in. L Carbon Steel Forstner Drill Bit Round Shank

Cuts clean, flat-bottomed holes for hinges and dowel work - carbon steel construction holds its edge job after job.
Irwin MPN 1966933 In Stock & Ready to Ship
$22.99
Free shipping on orders over $75
Ships within 24 hours · most orders arrive in about 2 business days

About Product Overview

This IRWIN Marples 1-3/8" Forstner bit is built for clean, flat-bottomed holes in wood - the kind of precise boring you need for hinge mortises, dowel holes, or overlapping cuts where a standard twist bit won't cut it. Carbon steel construction holds an edge through repeated use, and the round 3/8" shank fits standard drill press and portable drill chucks. Comes boxed as a single bit, ready to drop into your bit set.

  • Drill size: 1-3/8"
  • Material: Carbon steel
  • Shank type: Round, 3/8" diameter
  • Overall length: 4"
  • Brand: IRWIN Marples

The Details Specifications

Brand Irwin
Model / MPN 1966933
UPC 042526943652
Weight Under 1 lb
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

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01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Irwin. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

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Why we tell you to shop local
Authorized dealer · Irwin

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