Tree Bur SF, End Type Radius, Type Double, Shank Dia. 1/4 in, Head Dia. 3/4 in, Head Length 1 1/2 in, Included Angle Not Applicable, Overall Length 3 1/4 in, Trade Number SF-15, Primary Material Application Ferrous Metals, Non-Ferrous Metals, Stainless Steel, Steel, Head Shape Tree, Shank Length 1 3/4 in, Operating Speed - Maximum 20,000 RPM, Coating Bright (Uncoated), Compatible Tool Type Die Grinder, Rotary Power Tool, Straight Grinder, Head Material Carbide, Head Material Grade YG7