Compatibility: This 7 to 13 pin compact short adapter is compatible for any standard 7 pin female towbar socket to adapt to a standard 13 pin male plug. Signal Stability: Using high quality copper core contacts with good conductivity makes the electrical connection between the main vehicle and the trailer fast and stable. Safe and Reliable: Pass EN61000, RoHS, CE certification, reliable product, 12V/24V universal. Plug and Play: Positioned, insert the towbar adapter. Very easy to install, remove and replace. Weather Resistance: It is made of high quality ABS and copper material, can prevent rust, durable service life. It can provide a safe and stable electrical connection for trailer lights of commercial vehicles, automobiles, boats and special vehicles. This trailer plug adapter is suitable for European standard trailers and establishes a stable and safe connection between the main vehicle and the towed vehicle. Product Description: Product Name: 7 to 13 Pin Adapter Material: ABS + copper Color: Black Voltage: 12V/24V universal Dimension: Diameter 4.2cm, Length 8.5cm Weight: 80g Package 1 * 7 to 13 Pin Trailer Electrical Connector