"IRWIN INDUSTRIAL" SELF-FEED DRILL BITS
Drill large diameter holes in wood for pipe, conduit and other applications. Effortless cutting, even in gummy wood. Each bit is packaged with one hex key and two feed screws. Feed screws has a coarse thread for fast boring. Spurs on the outside diameter cut holes clearly and accurately. Quick-Change impact shank on all sizes.
- 7/16" Hex Shank
- Dia. Ins.=1-1/4