IRWIN 323016 Hammer Bit Drill Bit, Twist Flute, 8 in L Flute, SDS Max Shank, 5 in Dia Shank           Flute geometry removes dust from the hole quickly, double tempered, shot peened, finish with copper braze material for heat resistance and reduced tip loss. The chrome vanadium shaft is through hardened to 50-53 HrC. Fits all SDS-Max, Hilti TE F, G and Y rotary hammers.