Carbide Bur End Type Radius Cut Type Double Shank Dia 1/4 in Head Dia 1/2 in Head Length 7/16 in Included Angle Not Applicable Overall Length 2 1/8 in Trade Number SD-5 Primary Material Application Brass Bronze Copper Ferrous Metals Nickel Titanium Head Shape Ball Operating Speed - Maximum 16 000 RPM System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Shank Material Steel