3X cutting edges extends bit life compared to standard irwin self-feed bit. Feed screws has a coarse thread for fast boring. For use in applications such as large diameter holes in wood for pipe, conduit. 3x cutting edges extends bit life compared to standard irwin self-feed bits Aggressive screw pitch Feed screws has a coarse thread for fast boring Cut holes clearly and accurately For use in applications such as large diameter holes in wood for pipe, conduit Specifications: Diameter: 1-3/8" Overall length: 5" Shank size: 7/16" Finish: Black Oxide
- For drilling large diameter holes in wood for pipe, conduit and other applications
- Replaceable coarse screw point drills quickly in dry, wet and gummy wood
- All bits have a 7/16-Inch hex quick change impact shank that fits 1/2-Inch or larger electric drills or 7/16-Inch hex impact wrench drills
- Precision milled shank eliminates run out and wobble
- Forged in one piece from high carbon steel for Maximum strength under tough drilling conditions
- For drilling large diameter holes in wood for pipe, conduit and other applications
- Replaceable coarse screw point drills quickly in dry, wet and gummy wood
- All bits have a 7/16-Inch hex quick change impact shank that fits 1/2-Inch or larger electric drills or 7/16-Inch hex impact wrench drills
- Precision milled shank eliminates run out and wobble
- Forged in one piece from high carbon steel for Maximum strength under tough drilling conditions