Tree Bur SF, End Type Radius, Cut Type Aluminum, Shank Dia. 1/4 in, Head Dia. 1/2 in, Head Length 1 in, Included Angle Not Applicable, Overall Length 2 in, Trade Number SF-5A, Head Shape Tree, Operating Speed – Maximum 50,000 RPM, List Number 883, Coating Bright (Uncoated), Head Material Carbide, Shank Material Hardened Steel