Ground and polished then black oxide for a smooth metallic shine and excellent corrosion resistance. Designed and tempered to resist splitting and mushrooming.Features:Chrome vandium steelBlack FinishedHeat Treated(7) Pin Punches: 3/32in, 1/8in, 5/32in, 3/16in, 1/4in, 5/16in and 3/8in(6) Starter Punches: 3/32in, 1/8in, 5/32in, 3/16in, 1/4in and 5/16in(4) Center Punches: 1/4in, 5/16in, 3/8in and 1/2in(7) Flat Chisels: 1/4in, 5/16in, 3/8in, 1/2in, 5/8in, 3/4in and 7/8in(2) Cape Chisels: 1/4in and 5/16in(1) Half-Round Nose Chisel: 5/16in(2) Diamond Point Chisels: 5/16in & 3/8in