Carbide Bur Pointed Tree Shank Size 1/4 In. Cutting Edge Type Single Cut Overall Length 2 1/2 In. Length of Cut 3/4 In. Cutter Dia 1/2 In. Max RPM 15000 To 18000 Shank Material Hardened Steel Trade Number SG-13 Application For General Purpose Use On Steel Cast Iron Ferrous And Non-Ferrous Materials