This is a CRAFTSMAN TOOLS USA G243335 N.O.S. = New Old Stock, single 3/8" drive, 5/8" socket, 2.5" / 6.25cm. deep/high with a 6-point design, making it ideal for automotive use. This high-quality socket, featuring a chrome surface finish, is a reliable tool for various mechanical tasks and a valuable addition to any mechanic's tool box.