Carbide Bur End Type Radius Cut Type Aluminum Shank Dia 1/4 in Head Dia 1/2 in Head Length 1 in Included Angle Not Applicable Overall Length 2 3/4 in Trade Number SC-5 Head Shape Cylinder Operating Speed - Maximum 50 000 RPM List Number 1847 System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel