17, 19 and 21mm long reach impact wheel socket set. The 150mm long reach eliminates the need for an extension on wide or low offset wheels. Plastic protection sleeve on socket well prevents damage during installation or removal of wheels. Plastic protection inside the socket to ensure protection of wheel nuts. Drive size: 1/2". 150mm long. Includes 3 sockets: 17mm (Blue), 19mm (Yellow), 21mm (Red).