Carbide Bur End Type Pointed 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 SG-2 Primary Material Application Brass Bronze Carbon Steel Cast Iron Copper Stainless Steel Steel Titanium Head Shape Tree Operating Speed - Maximum 60 000 RPM List Number 310G System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Head Material Grade C2 Submicron Shank Material Steel