This Teng M1413N1 Basic Socket Set is a basic 13-piece ¼ inch drive set of sockets with an FRP ratchet and a 50mm extension bar. The set is supplied in a clip box which stores the sockets and includes a clip rail facility for adding extra sockets. The set includes the following sockets 4, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13mm, it is also supplied with 1/4in ratchet handle with 45 teeth and 1 x Extension Bar sized 50mm.