Feature:1. Reliable Material: This adapter is made of ABS and copper material, which improves oxidation resistance and high temperature resistance. The inner core is made of pure copper, which greatly improves the electrical conductivity.2. Features: Trailer plug adapter is well sealed with spring cover, dustproof and waterproof when not in use, prolonging service life.3. Easy Install: Easy to install, comes with mounting brackets, screws and nuts, just find the correct mounting position and tighten the nuts for a successful installation.4. Excellent Performance: Professional manufacturing, exquisite workmanship, high accuracy, stable performance and high reliability.5. Fully Equipped: This adapter kit comes complete parts, so you don't have to worry about losing parts and not finding replacements.Specification:Item Type: Trailer Plug AdapterMaterial: ABS and CopperProduct Features: 4 pin to 7 pin trailer socket adapterVoltage: 6 to 24 vEquipment: Replacement, repair, refurbishment, spare, etcApplication: Fits all US trailer plugs.Package List:1 xAdapter1 x Trailer Mounting Bracket6 x Screws6 x Nuts1 x English User Manual