Carbide Bur Round Nose Tree Shank Size 1/4 In. Cutting Edge Type Single Cut Overall Length 3 1/4 In. Length of Cut 1 1/2 In. Cutter Dia 3/4 In. Max RPM 5000 To 9000 Shank Material Hardened Steel Trade Number SF-15 Application For General Purpose Use On Steel Cast Iron Ferrous And Non-Ferrous Materials