Carbide Bur End Type Radius Cut Type Double Shank Dia 1/4 in Head Dia 3/4 in Head Length 1 in Included Angle Not Applicable Overall Length 2 3/4 in Trade Number SE-7 Primary Material Application Brass Bronze Carbon Steel Cast Iron Copper Stainless Steel Steel Titanium Head Shape Oval Operating Speed - Maximum 35 000 RPM List Number 310E System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Head Material Grade C2 Submicron Shank Material Steel