Carbide Bur End Type Radius Cut Type Double Shank Dia 1/8 in Head Dia 3/32 in Head Length 3/32 in Included Angle Not Applicable Overall Length 1 1/2 in Trade Number SD-41 Primary Material Application Brass Bronze Carbon Steel Cast Iron Copper Stainless Steel Steel Titanium Head Shape Ball Operating Speed - Maximum 90 000 RPM List Number 310D System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Head Material Grade C2 Submicron Shank Material Carbide