IRWIN 322031 Hammer Bit Drill Bit, Twist Flute, 4 in L Flute, SDS Plus Shank, 2 in Dia Shank                Bit tip and flutes remove dust more efficiently while the reduced area above the flute prevents binding while drilling. Chrome vanadium shaft and high heat resistance for reduced tip loss, fits all SDS-plus and Hilti TE-C rotary hammers.