Features： 1、Powering Trailer Lights: You can easily connect the 7pin flat to 12pin flat trailer connector to the vehicle socket to activate tail lights, brake lights, and turn signals. 2、Durable and Stable Performance: Featuring a wear resistant and durable housing, this heavy duty black plastic adapter is sturdy and long lasting. Equipped with brass terminals for excellent conductivity. 3、Perfect Compatibility: Trailer adaptor connector is compatible with most 7 pin European round plug to 12 pin Australian flat socket trailers, cars, and vehicles. 4、Secure Connection: The connector effortlessly locks into the trailer's existing socket and securely holds in place with no room for rotation or loose parts. 5、Easy Installation: Simply plug and play design that requires no cutting or splicing. The rotatable design allows for easy adjustment of installation angles. Specification： Material: ABS+Brass Pin Type:?7 pin to 12 pin Fitment: Suitable for Trailer, RV, Caravan, boat Package List： 1 x Trailer Adapter Plug