Features: 1.Adapter provides secure connection in the vehicle side to power the trailer's signal lights. 2.7?pin connector, adopts pure copper contact for good conductivity and fast connection, reliable. 3.Standard European trailer connector, widely used in commercial vehicles, semi trailers, trailers. 4.Aluminum alloy socket, anti?oxidation and anti?corrosion, durable and sturdy. 5.Simple installation, comes with the 7?way connector, mounting bracket and necessary accessory. Specification: Condition: 100% New Item Type: Trailer Connector Material: Copper+Aluminum Color: Black Shape: Round Type: Socket Line Length: Approx. 2m/6.56ft Main Function: Connect truck and power supply, suitable for trailer signal light display Outer Diameter of Flat Wire: Approx. 1cm/0.39in Wide One Wire Contains 3Red, Green and Black Wires, The Other Wire Contains 4 Brown, Blue, Yellow and White Wires, and the White Wire has Terminals