Cone Bur End Type Radius Cut Type Double Shank Dia 1/4 in Head Dia 1/2 in Head Length 1 1/8 in Included Angle 14 Degrees Overall Length 6 in Trade Number SL-5L6 Head Shape Cone Operating Speed - Maximum 50 000 RPM List Number 867 Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel