Chrome vanadium shaft through-hardened to 50-53HrC. Copper braze material gives high heat resistance for reduced tip loss. Shot-peened, double-tempered finish reduces breakage. Fits all spline rotary hammers. Cutting Diam: 3/4 in. Flute Length: 8 in. Type: Demolition Hammers. Height: 1 in. Length: 16 1/2 in. Overall Length: 13 in. Type: Spline Drill Bit. Width: 1 3/4 in.