Suitable for 7-pin heavy duty European standard trailer. Establishes a secure connection between your vehicle and the additional major trailer; Transfers electronic signal lights from vehicle to trailer. Powers your caravan, towing and truck. Brass pins in a metal housing. Waterproof for all road and weather conditions. Product Description Item Type: Electrical Plugs & Sockets Item Name: 7 Pin Trailer Socket Material: Aluminum Color: Silver Input: 12V Item Size: 9.2(h) 4(d)cm / 3.6(h) 1.6(d)in Package List: 3 x 7 Pin Trailer Socket. Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.