Supreme Quality -- This 7-way trailer plug is made of aluminum alloy and cross-slotted brass needles freely matched with any European female pin. And it is RoHS certified. Safety Assured -- The 7-pin round trailer adapter provides a secure connection between your main vehicle and the additional trailer to transfer electronic signal lights and power from the vehicle to the trailer. Universal Standard -- The 7-pin trailer plug can be adapted to European standard trailer connectors to light up the trailer, caravan or other commercial vehicle. Easy to Assemble -- The 12V 7-pin towing electrical sockets are easy to replace any damaged item. These are normal Type N standards, which can be rewired by referring to the diagrams on the internet. Durable Design - Waterproof towing socket with metal aluminum housing prevents corrosion and rust for long-lasting service.