Irwin Industrial Tools 43022 1-3/8-Inch Self Feed Bit
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