Performance Tool W83255 W83240 1/2" Drive Hex Lock Nut Socket, 55mm Used on Toyota FJ, LN, and RN Models Size: 55mm Metric Hex Lock Nut Socket, 1/2 Drive Use on Toyota, RN, Land Cruiser, FJ Cruiser models with front adjusting nuts. Durable build quality Specially designed and makes wheel bearing locknuts easy to remove or install Socket is designed for use with 1/2 inch square-drive manual tools only; Impact tool use voids socket Lifetime