Prepare your semi to be Ready for the Road Ahead with bright flashing lights for emergency or warning situations, with the Grote 6.7" Tall Dome LED Beacon Light. By using an alternating pattern that provides enhanced stability, this replacement light alerts other workers, drivers, or spectators of a delicate situation. Built with a sturdy outdoor body to perform its best in all types of climates. FleetPride is your First Click in Heavy Duty .