Oval Bur SE End Type Radius Cut Type Double Shank Dia 1/8 in Head Dia 1/4 in Head Length 3/8 in Included Angle Not Applicable Overall Length 1 1/2 in Trade Number SE-51 Head Shape Oval Operating Speed - Maximum 70 000 RPM List Number 815 Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel