Tractor 12V 3 Pin Plug Socket --- Plug socket 3 pin is with waterproof silicone rubber seal. The thermoplastic housing prevents rusting or corrosion, ensuring a long service life, great replacement for your old and d plug. . Highest Quality --- Universal European standard pass CE, ROHS certification, this trailer plug socket is 3 pin and is suitable for European standard trailers, this 3 pin plug socket provides a secure connection between your main vehicle and the additional one truck or trailer to transmit the electronic signal lights and the power supply. . Exquisite Design --- Spring-loaded flap locks the 3 sockets in place when in use, protects the terminals when not in use, our 3-pin connector is made of silicone with waterproof rubber seal. The thermoplastic housing prevents rusting or corrosion, with a robust housing that ensures a long service life. . Wide range of applications --- Plug this small adapter into the 3-pin plug and then plug into your standard 3-pin socket. Suitable for Cars, Trailers, RV, Trucks, and work perfectly with tractor. .