1. trailer parts 2. 7 pin socket 3. plastic 4. voltage 12v 5. trailer adapter 1. trailer parts 2.7 pin socket3. material : metal4.voltage 12v/24vitem :nb601210Our company is manufacturer of trailer plug, sockets and other trailer connectors with good quality and high cost-performance.Our products have been CE,GS,ROHS Certified.Our products are selling to every part of the world, including Europe, ...