features and benefits: center punches are used for piercing or marking for staring drills in metal and other materials cold chisels are used for cutting shaping and removing metal softer than the cutting edge of the chisel pin points are used for driving out and removing already loosened pins and keys after initial movement by a solid punch line-up punches are used for aligning holes in metal pieces through which rivets or bolts are inserted made in the usa this 14 piece punch and chisel set includes the following: cold chisel cutting widths: 1/4" 3/8" 1/2" 5/8" 3/4". Center punch stock size: 3/8". Starter punch point sizes: 1/8" 3/16". Pin punch sizes: 3/32" 1/8" 5/32" 3/16" 1/4". Line-up punch point size: 1/8". These are all made of s2 stainless steel. All packaged in a handy storage case.