Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer's electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. Protect your vehicle-to-trailer wiring connection with CURT electrical plug and socket covers. This set of 4-way flat dust covers features durable black rubber construction to easily resist the elements and maintain good connectivity. The covers come with convenient attachment tabs to avoid loss, and the kit includes both a vehicle-side socket cover and trailer-side plug cover.