DeWALT DW1633 Wood Bit Drill Bit, 1 in L Flute, Ball Groove, Hex Shank, 7/16 in Dia Shank

With an aggressive spur for fast material penetration, DeWALT self-feed bits feature optimized cutting geometry for long life and an open tooth design for easy re-sharpening. A 7/16 in ball groove shank offers quick-change applications.