Carbide Bur End Type Radius Cut Type Aluminum Shank Dia 1/4 in Head Dia 3/4 in Head Length 1 in Included Angle Not Applicable Overall Length 2 3/4 in Trade Number SC-7NF Primary Material Application Zinc Head Shape Cylinder Operating Speed - Maximum 35 000 RPM List Number 310C System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Head Material Grade C2 Submicron Shank Material Steel