"Specially designed sockets for removal and replacement of various switches currently found on Ford, GM, Chrysler and some import vehicles. Socket Sizes in. Assorted sizes. 7/8in. 22mm Offset extended oxygen sensor socket 7/8in. 22mm Offset oxygen sensor socket 7/8in. 22mm Vacuum switch socket 7/8in. 22mm Oxygen sensor socket 1 1/16in. 27mm Deep oil switch socket 1 3/16in. 29mm Oil sender unit socket 1 1/16in. 27mm GM thermal sensor switch socket"