Carbide Bur End Type Pointed Cut Type Single Shank Dia 1/4 in Head Dia 3/8 in Head Length 5/8 in Included Angle 28 Degrees Overall Length 2 1/2 in Trade Number SM-4 Primary Material Application Cast Iron Ferrous Metals Non-Ferrous Metals Steel Head Shape Cone Shank Length 1 7/8 in Operating Speed - Maximum 40 000 RPM System of Measurement Inch Coating Bright (Uncoated) Compatible Tool Type Die Grinder Rotary Power Tool Straight Grinder Head Material Carbide