Carbide Bur, Cut Type Aluminum, Head Dia. 1/2 in, Head Length 1/2 in, Included Angle Not Applicable, Overall Length 2 13/64 in, Trade Number SD-5, Primary Material Application Non-Ferrous Metals, Head Shape Ball, Operating Speed - Maximum 50,000 RPM, Coating Bright (Uncoated), Head Material Carbide, Shank Material Steel