The Rolson Drive Socket Set is a large set that comprises 52 different items so covers most every need a homeowner could have. The set offers a great value for money option for a wide range of tasks and includes a 150mm spinner handle as well as two adaptors and a reversible ratchet handle. There are also 16mm and 21mm spark plug sockets and a wide range of sockets in millimetre and AF sizes. The set even comes in a handy storage box that means everything is easy to find and transport. 52-piece setSpinner handle2 adaptorsSpark plug socketsMillimetre and AF sizes 52pc 1/4'', 3/8'', & 1/2'' Dr Socket Setcontents include 1/4'' Dr. 150mm spinner handle1/4'' x 3/8'' adaptor, 3/8'' Dr. 75mm extension bar3/8'' Dr. 200mm reversible ratchet handle3/8'' Dr. spin disc, 16mm & 21mm spark plug socket1/2'' Dr. 250mm reversible ratchet handle1/4'' Dr. AF sockets 5/32'', 3/16'', 7/32'', 1/4''9/32'', 5/16'', 11/32'', 3/8'', 13/32'', 7/16'', 15/32''1/2'', 1/4'' Dr. metric sockets 4, 4.55, 5.5, 6, 7, 8, 9, 10, 11, 12, 13mm1/4'' Dr. sockets (8PT) 1/4'', 5/16'', 3/8''3/8'' Dr. AF sockets 9/16'', 11/16'', 3/4''3/8'' Dr. metric sockets 14, 16, 17mm1/2'' Dr.metric sockets 10, 11, 12, 14, 15, 16, 18, 19, 20, 22mm