Carbide Bur End Type Radius Cut Type Single Shank Dia 1/4 in Head Dia 5/16 in Head Length 7/8 in Included Angle 14 Degrees Overall Length 2 5/8 in Trade Number SL-2 Primary Material Application Brass Bronze Carbon Steel Cast Iron Copper Stainless Steel Steel Titanium Head Shape Cone Operating Speed - Maximum 60 000 RPM List Number 310L System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Head Material Grade C2 Submicron Shank Material Steel