Cone Bur End Type Pointed Cut Type Single Shank Dia 1/4 in Head Dia 3/8 in Head Length 5/8 in Included Angle 28 Degrees Overall Length 2 in Trade Number SM-4 Head Shape Cone Operating Speed - Maximum 63 000 RPM List Number 905 Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel