Irwin 322029 SpeedHammer Plus Masonry Drill Bit - 2-Cutter, 7/16" x 4" x 6"

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 - up to 25% faster than other bits. Shot-peened, double-tempered finish reduces breakage. Hot isostatically pressed to extend life and resist breakage. Copper braze material gives high heat resistance for reduced tip loss. All tips made to ANSI specifications. Diameter: 7/16". Flute Length: 4". Overall Length: 6".