Cone Bur End Type Radius Cut Type Double Shank Dia 1/4 in Head Dia 6 mm Head Length 16 mm Included Angle 14 Degrees Overall Length 50 mm Trade Number SL-1 Head Shape Cone Operating Speed - Maximum 70 000 RPM List Number 807 Coating Bright (Uncoated) Head Material Carbide Shank Material Carbide