Carbide Bur End Type Radius Cut Type Double Shank Dia 1/4 in Head Dia 1/4 in Head Length 5/8 in Included Angle 14 Degrees Overall Length 6 5/8 in Trade Number SL-1L6 Primary Material Application Brass Bronze Carbon Steel Cast Iron Copper Stainless Steel Steel Titanium Head Shape Cone Shank Length 6 in Operating Speed - Maximum 65 000 RPM List Number 310L System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Head Material Grade C2 Submicron