Optronics LED Amber Square Stud Mount for Trailers features a reflecting lens that eliminates the need for a separate reflector to meet DOT requirements. Features a screw-on, replaceable lens, stud mount black base, all-weather molded plastic housing, and a durable lens. Includes lead and ground wires. 6 diodes. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Trailer Lights.