1 Red 17" Inch Waterproof Submersible Brake Stop Turn ID Light Bar Trailer Truck RV - Multifunction 1 multi-functional 17" light bar. Function as Left Turn, Right Turn, Identification and Stop Light Bar 4 in 1. It is completely sealed and waterproof. Surface Flange Mount - the back panel is completely flat High impact polycarbonate Lens is sonic welded to the house.11-DIODE SQUARE LED LIGHT.Operate from 9-16 Volts Complies with DOT standards & SAE approved. This is a very dependable light bar, it is surface mount so the installation is quite easy. Bright enough will make your truck or trailer very noticeable!