[7-Pin Metal Trailer Socket] The 7-pin 12V trailer socket establishes a stable signal transmission connection between the vehicle and the trailer, caravan, etc. Ideal for new hooks or replacing damaged sockets. Suitable for European standard wiring systems such as trailers, trucks, caravans, motorhomes, etc., providing connections for turn signals, side lights, position lights, brake lights and fog lights. [Waterproof and Durable] This 7-pin trailer socket is made of high-quality aluminum alloy and brass, with durable shell and waterproof material, suitable for all weather and roads, plastic shell prevents rust or corrosion. [Easy to install] Plug and play design, connect the socket circuit according to the wiring configuration.