Weatherproof Cover --- The weatherproof cover protects the connection when not in use and locks the 7-pin socket when not in use. This adapter allows you to connect the vehicle's 7-pin European socket to the caravan or tractor. Weatherproof Cover --- The weatherproof cover protects the connection when not in use and locks the 7-pin socket when not in use. This adapter allows you to connect the vehicle's 7-pin European socket to the caravan or tractor. Scope of Application --- Standard European vehicle connectors, widely used in commercial vehicles, semi-trailers and trailers, etc. Please check for suitability before purchasing to avoid mismatch. Easy to Install --- Easy to install and use, without complicated tools and steps, which can save costs and effort and provide you with convenience. Usage ---- Use 98.4 inch cable, which can be used as a connecting cable, pure copper connector, with good conductivity, the plastic shell is environmentally friendly, not easy to rust and corrode