Carbide Bur, Cut Type Aluminum, Head Dia. 3/8 in, Head Length 3/8 in, Included Angle Not Applicable, Overall Length 2 5/64 in, Trade Number SD-3, Primary Material Application Non-Ferrous Metals, Head Shape Ball, Operating Speed - Maximum 66,000 RPM, Coating Bright (Uncoated), Head Material Carbide, Shank Material Steel