Cone Bur End Type Radius Cut Type Single Shank Dia 6 mm Head Dia 12 mm Head Length 28 mm Included Angle 14 Degrees Overall Length 50 mm Trade Number SL-4 Head Shape Cone Operating Speed - Maximum 50 000 RPM List Number 907 Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel