For 7-13 pin sockets ------- Screw this dustproof socket adapter bracket to the trailer, after parking the trailer, insert the 13 pin socket, 13 to 7 pin adapter or 7 to 13 pin towbar adapter into the socket. Protection ------ Trailer socket bracket with locking nose, firmly locks the adapter, easy to install, you only need a key (not included), use this socket bracket to protect the copper contacts of the socket from damage. High quality material ------ This trailer connector bracket is made of high quality metal and ABS plastic, high temperature resistant, solid and not easy to break. Can be screwed to the tow bar ------ You can screw the trailer adapter socket to the tow bar, a really practical trailer accessory and useful, it is a good choice for you. GREAT DESIGN ------ This trailer adapter cover can be used on bike racks, campers or horse trailers, waterproof and dustproof. Specification: Item Type: Trailer Dirt Protection Socket Adapter Material: ABS + Metal Application: Trailer Package List:1 x Trailer Socket Holder Yeuri