Includes 1/8", 3/16", 1/4", 5/16", 3/8" diameter punches that have a 3-1/2" long drive pin section, with a 4-1/2" long knurled body. Made of hardened tool steel and meets government specs. Includes vinyl case.FeaturesConforms to government specifications GGG-P-831EMade of tool steel, hardened and centerless groundKnurled body is 4-1/2" long and the drive pin section 3-1/2" longFor use on work not accessible with shorter punchesSet contains five punches, one of each size, in a vinyl case1/8", 3/16", 1/4", 5/16", 3/8"