Carbide Bur End Type Radius Cut Type Double Shank Dia 1/4 in Head Dia 1/2 in Head Length 1 in Included Angle 20 Degrees Overall Length 2 3/4 in Trade Number SB-5RA Primary Material Application Brass Bronze Copper Ferrous Metals Nickel Titanium Head Shape Cylinder Operating Speed - Maximum 28 000 RPM System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Shank Material Steel