Outfit your semi to be Ready for the Road Ahead with improved light safety and effectiveness, with the Grote 16.5" 12V 2.3A LED Rectangular Mini Light Bar. This replacement light features 20-selectable flash patterns that can be used to warn oncoming traffic of potential danger or emergencies. Manufactured with a magnetic and vacuum mount to offer a range of temporary and permanent mounting options. FleetPride is your First Click in Heavy Duty .