Cone Bur, End Type Pointed, Cut Type Double, Shank Dia. 1/4 in, Head Dia. 1/2 in, Head Length 7/8 in, Included Angle 28 Degrees , Overall Length 2 3/4 in, Trade Number SM-5, Operating Speed – Maximum 50,000 RPM, Coating Bright (Uncoated), Head Material Carbide, Shank Material Steel