Description: This adaptor refit the 7-pin socket on your car. Will operate all road legal lighting for your trailer / caravan. Metal Outer to be more sturdy than the Plastic version. Simple fitting. Standard Screw connections on top of pins. Suitable for all standard Trailer / Accessory Connections (12N) Please do not mistake this item for the 7pin one, please check the socket male or female type before purchasing, Specification: Main features: connecting trucks and power supply, suitable for trailer signal display. Applications: Commercial vehicles / semi-trailer / trailer. Category: Plug. Shape: round. Production process: injection molding. Features: Waterproof. Contact material: copper. Material: Aluminum. Rui number: 7. Number of stitches: 7. Model: 12N (for European car) Copper needles: Hpb58-2, Hpb59-1. Size: 9.5*3.5cm (shown as in the pictures) Note: 1. Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. 2. The colors may be different as the difference display, Please understand. Package Included: 1*7 Pin Metal Plug Towing System Car Van Trailer. 1*English User Manual.