Cone Bur End Type Radius Cut Type Single Shank Dia 1/4 in Head Dia 3/8 in Head Length 1 1/16 in Included Angle 14 Degrees Overall Length 2 15/16 in Trade Number SL-3 Primary Material Application Cast Iron Ferrous Metals Non-Ferrous Metals Steel Head Shape Cone Shank Length 1 3/4 in Operating Speed - Maximum 40 000 RPM Compatible Tool Type Die Grinder Rotary Power Tool Straight Grinder Head Material Carbide Head Material Grade YG7 Shank Material Steel