Carbide Bur, End Type Radius, Type Aluminum, Shank Dia. 1/4 in, Head Dia. 3/4 in, Head Length 1 1/4 in, Included Angle Not Applicable, Overall Length 3 in, Trade Number SF-14NF, Primary Material Application Zinc, Head Shape Tree, Operating Speed - Maximum 35,000 RPM, List Number 310F, System of Measurement Inch, Coating Bright (Uncoated), Head Material Carbide, Head Material Grade C2 Submicron, Shank Material Steel