For drilling large diameter holes in wood for pipe, conduit, and other applications. Precision milled shank eliminates runout and wobble. Replaceable screw tip. 3 times the cutting edges extends bit life. Resharpenable edges. 7/16'' hex quick change impact shank fits 1/2'' or larger electric drills or 7/16'' hex impact wrench drill. 1 per card.
From the Manufacturer
Irwin Industrial Tools 3046009 1-3/4-Inch 3-Cutter Self Feed Bit. For fast, rough or clean and exact holes, Irwin's extensive line of woodboring drill bits provide the user with the best available tools for each application in achieving their wood drilling needs.