[European Standard]The small trailer plug simply plugs into the 13- plug Euro Standard Style plug and fits the other side into the 7-pin plug on caravans / trailers.Notice: Black is the normal version which is for EU system(standard). [13 pin-7pin]1x trailer adapter 13-pin male - 12N and 12S 7-pin female.13 Pin to 7 Pin conversion,connecting a car and a trailer/ and supply power to the trailer/ for all important indicators, signal light and fridge. Make vehicle and /trailer electrics compatible when towing. [ 7 Pin Electrics]7 pin 12N electrics legal lighting which includes brake, indicator and fog lights.7 pin 12S electrics supplemental lighting such as reverse lights, interior lights and appliances+S plug to connection, and easy to all your electrics up and running. [Easy To Install]Plug and play desig, without cable is used to connect the lights from the vehicle to the trailer with ease.Plug and play design, plug insert into socket, twist and lock, no need to change any cable.Insulated environmental PVC wires, waterproof performance. [Security] springs Flap protects the connections when the article is not in use and locks into the 7 poles plug when in use.It also has an additional security that secures the attachment of the trailer to the adapter.Made of high material which has been given a mat-finish, providing a unique design and delicate feel. Material:PVC colour:black Package Contents: 1 * Towing Adapter Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.