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 Brass Bronze Copper Ferrous Metals Nickel Titanium Head Shape Cone Operating Speed - Maximum 19 000 RPM System of Measurement Inch Coating Bright (Uncoated) Compatible Tool Type Die Grinder Head Material Carbide Shank Material Steel