In this very nice vintage set of Japan manufactured ratchets and sockets and extensions, there is included with this set a Proto 12 mm hex bit, a Napa 3 inch extension, popular mechanics half inch socket. Just to throw a little icing on the cake. There is a 5 inch 3/8 extension, 10 inch and 6 inch half inch drive extensions half inch drive ratchet 3/8 inch drive ratchet. 7/8, three-quarter, 13/16, sockets. Half inch drive swivel extension. This set would be any great addition to anyone’s collection..