DeWALT DW1630 Drill Bit, 1 in Dia, 6 in OAL, 7/16 in Dia Shank, Ball Groove, Hex 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.