Fits all SDS-plus and Hilti TE-C rotary hammers. Reduced area above the flute prevents the drill bit from binding while drilling-the full usable length can be utilized. Chrome vanadium shaft through-hardened to 50-53HrC. Patented tip and flute design removes dust more efficiently. Shot-peened, double-tempered finish reduces breakage. Copper braze material gives high heat resistance for reduced tip loss.