Ball Bur SD Cut Type Single Shank Dia 3 mm Head Dia 1 19/32 mm Head Length 1 19/32 mm Included Angle Not Applicable Overall Length 1.50mm Trade Number SD-40 Primary Material Application Cast Iron Non-Ferrous Metals Steel Head Shape Ball Operating Speed - Maximum 100 000 RPM Coating Bright (Uncoated) Head Material Carbide Head Material Grade C2 Submicron Shank Material Carbide