Carbide Bur End Type Corner Radius Cut Type Double Shank Dia 1/4 in Head Dia 5/16 in Head Length 3/4 in Included Angle Not Applicable Overall Length 2 1/2 in Trade Number SA-2CR Primary Material Application Brass Bronze Copper Ferrous Metals Nickel Titanium Head Shape Cylinder Operating Speed - Maximum 45 000 RPM System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Shank Material Steel