Converts a 13-pin Euro socket on a vehicle to a 7-pin plug on a trailer or caravan, transferring electronic signal lights from the vehicle to the towing equipment. Features a weatherproof sprung locking socket cover that protects connections when not in use and locks the 7-pin plug when in use. Dimensions: 10.40cm x 12.10cm x 5.40cm. Weight: 0.08kg.