Full finish Knurled handle to to provide a grip for fingers Made of S2 stainless steel All included in a handy storage carrying case Made in the USAThese pin punches are shaped like a thin rod, with knurled handles. Used for driving out and removing already loosened pins and keys after initial movement by a solid punch. This set includes the following sizes: 3/32", 1/8", 5/32", 3/16", 1/4", 5/16", 3/8", and 7/16".