Fits in a standard 2-1/2″ x 6-3/4″ oval hole. Light function: Stop, Turn, Tail Light These are 12 V lights. The lights are made from long lasting materials so you won’t be left in a lurch! We are an American company and ship from a USA warehouse. Meets all applicable DOT/SAE standards and fits standard trailer light mount.

https://www.amazon.com/Trailer-Sealed-Waterproof-Including-Grommet/dp/B075CRTKY4