Features 1、Using pure copper as the inner core, greatly improves the electrical conductivity. 2、Wear-resistant, corrosion-resistant, effectively waterproof and long service life. 3、Applicable to all towing vehicles that don't require electric brakes, including trailers, semi-trailers, RVs, etc. 4、Convert the 4-pin to the 7-pin plug, easy to operate, convenient to use. 5、Advanced manufacturing technology, high reliability and high performance. Specification Condition: 100% Brand New Item Type: Trailer Adapter Plug Material: Plastic + Metal Color: As picture shown Main Function: Simultaneous display of taillight signals of trailers and RVs Voltage: 6-24V Scope of Application: Suitable for commercial vehicle / semi-trailer / trailer Package List 1 x Trailer Plug 1 x Bracket 1 x Accessory Pack