DEWALT DW1633 Drill Bit, 1-3/8 in Dia, 6 in OAL, 7/16 in Dia Shank, Ball Groove, Hex Shank Rolair 8422HK30 9HP Wheeled Gas Air Compressor (4) 8 in 8/12 TPI

(4) 8 in 8/12 TPI Multi-Material

Also included in the kit are a belt clip

Users also get a variable-speed trigger

The QUAD EDGE™ tip delivers a precision start and four cutting edges to create smaller chips for faster removal and less heat for longer bit life

including a 3/8 in metal chuck

DEWALT DW1633 Drill Bit, 1-3/8 in Dia, 6 in OAL, 7/16 in Dia Shank, Ball Groove, Hex Shank Rolair 8422HK30 9HP Wheeled Gas Air Compressor (4) 8 in 8/12 TPIWith 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.