Sturdy and Space-saving: Made of excellent quality ABS plastic, super strong and durable, guarantee at least one year use. Pocket size, very space-saving, a practical car accessory. Only suitable for people who have a car with 13-pin socket, but you have a pendant with 7 pins, please confirm before purchase. Color: Black Product function: used to convert 13-pin socket to 7-pin socket Type: Adapter Shape: round Production process: injection molding Contact material: copper Insulation material: engineering plastic. Shell material: PA Number of pins: 13 to 7 cores (suitable for new and old model conversion connections) Voltage output: 12V Main function: connect the trailer and power supply, suitable for signal light display of the trailer. Quantity delivered: 2 pieces Note: the data are manual measurements, please allow an error of 1-3cm, due to the differences between the light and the screen, there will be a certain color difference, the specific received in kind prevail.