These multi-function submersible tail lights are designed to protect the bulbs and contacts when the trailer is under water during launching and loading. The gasketed tail light and side marker lenses are easily replaceable. Closed bottom design prevents road grit from entering the lamp. Widely used by boat trailer manufacturers, the lights come with 12″ pre-installed wire leads and two 1/4″ mounting studs on 2″ centers. Black housing. Display packaged.