Optronics ST-3RB - Universal stud-mount stop/turn/tail lights for over 80” applications. ST-3RB is 8-function: stop, turn, tail, rear clearance, rear reflex, side marker, side reflex and license illuminator. Features built-in rear clearance light, eliminating the need for a separate light to meet DOT requirements. Designed with plug-n-go connections for quick connect wiring. Grounds through mounting studs. Mounts on 2” centers. Features screw-on, replaceable lens and easy to change replaceable bulb. Shock proof socket guarantees long bulb life. All-weather molded plastic housing and durable lens protect against corrosion.