This 12 pc Socket Wrench Set includes nine 1/2 in drive socket wrenches. Includes 7/16 in, 1/2 in, 9/16 in, 5/8 in, 11/16 in, 3/4 in, 13/16 in, 7/8 in and 15/16 in 12 point sockets plus a 5/8 in spark plug socket, one ratchet and a 5 in extension. Keep all of the pieces together in a compact hinged metal box. Klein® 65510 Socket Wrench Set, Imperial Standard, Specifications: 1/2 in Drive, 12 point, 12 pc, Box Tool Storage, Tool Storage Included: Yes