The M85621R is a 6 inch oval hybrid combination stop/turn/tail and back-up light. It features 10 LEDs for the red STT functions, and 3 LEDs for the white back-up and is DOT compliant in both horizontal and vertical mounts. It fits industry standard 6” oval grommets like the M50600-B (sold separately). The M85621R has two PL-3 connectors integrated in the rear of the housing, one for the S/T/T circuit and one for the BU circuit. This light features a polycarbonate lens & housing, and is backed by Maxxima for 5 years.