Carbide Bur End Type Flat Cut Type Single Shank Dia 1/8 in Head Dia 1/4 in Head Length 1/4 in Included Angle 10 Degrees Overall Length 1 3/4 in Trade Number SN-51 Primary Material Application Brass Bronze Carbon Steel Cast Iron Copper Stainless Steel Steel Titanium Head Shape Inverted Cone Operating Speed - Maximum 65 000 RPM List Number 310N System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Head Material Grade C2 Submicron