The Starrett S565WB set includes eight drive pin punches with a 4" overall length and 1/16", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", and 5/16" pin diameter sizes to push pins and rivets into or out of a workpiece. Each punch is made from hardened and tempered steel, which provides wear resistance and strength. The round shanks are knurled for grip. The set comes with a round red plastic case for storage. Pin punches are used to insert or knock out rivets and pins in assemblies. They have a metal shank on one end and a metal pin driver on the other, and are typically tapped with a hammer.The L.S. Starrett Company manufactures precision measuring tools, metrology and testing equipment, and saw blade products. The company, founded in 1880, is headquartered in Athol, MA.What"s in the Box?Starrett 565A drive pin punch with 9/16" pin length and 1/16" pin diameterStarrett 565B drive pin punch with 11/16" pin length and 3/32" pin diameterStarrett 565C drive pin punch with 3/4" pin length and 1/8" pin diameterStarrett 565D drive pin punch with 7/8" pin length and 5/32" pin diameterStarrett 565E drive pin punch with 1-3/64" pin length and 3/16" pin diameterStarrett 565F drive pin punch with 1-3/64" pin length and 7/32" pin diameterStarrett 565G drive pin punch with 1" pin length and 1/4" pin diameterStarrett 565H drive pin punch with 1" pin length and 5/16" pin diameterRound red plastic storage case