Wood Owl 1" Diameter x 6 1/2" OverDrive Fast Boring Ultra Smooth Auger Brad Point Boring Bit 03704 1 diameter x 6 1/2 long Ultra-efficient drilleing. Can extend battery life on cordless drills by as much as 35%. Brad point and unique chamfered lead-in edge for smooth starts, fast cuts and smooth holes Produces minimal blowout on exit holes Induction hardened steel construction and precision ground cutting edges for durability and accuracy.