Cone Bur, End Type Pointed, Type Single, Shank Dia. 1/8 in, Head Dia. 1/4 in, Head Length 1/2 in, Included Angle 22 Degrees , Overall Length 1 1/2 in, Trade Number SM-51, Head Shape Cone, Operating Speed - Maximum 70,000 RPM, List Number 915, Coating Bright (Uncoated), Head Material Carbide, Shank Material Hardened Steel