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Irwin 5/16 in. X 6 in. L High Speed Steel Split Point Drill Bit Straight Shank

Irwin 5/16 in. X 6 in. L High Speed Steel Split Point Drill Bit Straight Shank

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Extra reach for deep holes, with a split point that starts clean and true every time.
Irwin MPN 66720ZR
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

In-Store Exclusive

This one's worth the trip to the store.

This Irwin item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

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Why isn't this online? The whole story →

About Product Overview

This IRWIN aircraft-length bit gives you extra reach for drilling through thick stock, studs, or layered materials where a standard bit falls short. The 5/16" high speed steel bit holds an edge through repeated use, and the black oxide finish adds resistance to rust and wear. A split point design bites in immediately, so you get clean starts without walking or wandering, even on hard or slick surfaces.

  • Drill Size: 5/16"
  • Overall Length: 6"
  • Material: High Speed Steel
  • Finish: Black Oxide
  • Shank Type: Straight Shank
  • Style: Split Point

The Details Specifications

Brand Irwin
Model / MPN 66720ZR
UPC 042526667206
Weight Under 1 lb
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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