Carbide Bur Set, Single Cut, Shank Size 1/8 In, Max RPM 35,000, Number of Pieces 12, Tool Material Carbide and Carbon Steel, Includes SA-42, SA-43, SC-41, SC-42, SD-42, SE-41, SF-42, SG-43, SH-41, SL-42, SM-42, SN-42