For 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 steel Black Finished Heat 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