Carbide Bur Cylindrical Flat End End Cut Shank Size 1/8 In. Cutting Edge Type Double Cut Overall Length 1 1/2 In. Length of Cut 9/16 In. Cutter Dia 1/8 In. Max RPM 65000 To 75000 Shank Material Hardened Steel Trade Number SB-43 Application For Steel Stainless Steel High-Temp Alloys And Cast Iron