Tree Bur SG, End Type Pointed, Cut Type Single, Shank Dia. 1/4 in, Head Dia. 3/8 in, Head Length 3/4 in, Included Angle Not Applicable, Overall Length 2 1/2 in, Trade Number SG-3, Primary Material Application Cast Iron, Ferrous Metals, Non-Ferrous Metals, Steel, Head Shape Tree, Operating Speed – Maximum 66,000 RPM, Coating Bright (Uncoated), Head Material Carbide, Shank Material Steel