Set contains both internal and external pipe plug sockets from 7/16" to 5/8". Forged from high quality, impact grade, chrome molybdenum alloy steel. Backed by Sunex Tools lifetime guarantee. Comes with a blow molded case Set includes: 7/16" female pipe plug socket, 7/16" male pipe plug socket, 1/2" female pipe plug socket, 1/2" male pipe plug socket, 9/16" female pipe plug socket, 9/16" male pipe plug socket, 5/8" female pipe plug socket and 5/8" male pipe plug socket.