Bosch RC2172 Drill Bit, 1-1/4 in Dia, 12 in OAL, Spiral Flute, 3/8 in Dia Shank, SDS-Plus Shank

SDS-plus shank eliminates need for separate drill. Bit is 36% faster and lasts twice as long as competitive cutters. For use with most common rotary hammers in rotation mode.