Carbide Bur, End Type Radius, Type Aluminum, Shank Dia. 1/4 in, Head Dia. 1/2 in, Head Length 7/8 in, Included Angle Not Applicable, Overall Length 2 5/8 in, Trade Number SE-5NF, Primary Material Application Zinc, Head Shape Oval, Operating Speed - Maximum 50,000 RPM, List Number 310E, System of Measurement Inch, Coating Bright (Uncoated), Head Material Carbide, Head Material Grade C2 Submicron, Shank Material Steel