Welcome to our store! 1. Fits for 7-13 Pin Plug: Screw this dustproof holder onto the trailer. After parking the trailer, plug the 13-pin plug, 13 to 7-pin adapter, or 7 to 13-pin adapter into the socket. 2. Features: This trailer adapter cover holder can be used on bike racks, caravans, or horse trailers. It is waterproof and also protects against dust. 3. Protective: Trailer connector holder with locking nose, locks the adapter securely, easy to install, all you need is a wrench (not included). Use this connector holder to protect the copper contacts on the connector from damage. 4. Can be screwed onto the tow bar: You can screw the trailer adapter connector holder onto the tow bar, very practical and useful accessory for the trailer, a good choice for you. 5. Premium Material: Made of high-quality metal and ABS plastic, this trailer connector holder is flame retardant, resistant to high temperatures, sturdy, and not easy to break. Item Type: Trailer Dustproof Connector Adapter Material: ABS + Metal Usage: Trailer 1 x Trailer Connector Holder If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.