Champion Cutting Tool Contractor Series 8 Piece Solid Carbide Bur Set (SA5, SC3, SC5, SD5, SF3, SF5, SG3, SL4): US-BK8P Includes: SA5, SC3, SC5, SD5, SF3, SF5, SG3, SL4 Used in mold and pattern making, die sinking, tool making and maintenance, burs reach into small intricate areas Burring Cast Iron, steels, titanium, brass, bronze, copper