Features: This 13 to 7 pin plug is suitable for European standard trailer, establishing connection between vehicle and additional trailer and transferring electronic signal lights from vehicle to trailer Converts the 13-pin socket on your car to the 7-pin female socket. Plug this little adapter into the 13 pin plug and then plug in your standard 7 pin. Sprung flap locks the 7 pin plug when in use but protects the connections when not in use Adapter ONLY,other accessories demo in the picture is not included. Specification: Material: Plastic Color:Black Size: app.70x47x35mm/2.76x1.85x1.38in(LxHxD) Input voltage: 12V Quantity: 1 Pc Note: No retail package Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 x Adapter