Convert Collt Type A barricade flashers (part numbers 634-1 and 634-5) to LED Flashers with the 4-LED Replacement Bulb. Operates in some other 6-volt DC lights that generate a minimum of 4.2 volts; simply insert bulb into your incandescent light's receptacle. Can be used both in static-mode road hazard units that have the lamp lit steadily as well as in units that function in flashing-light output mode.
3-yr. warranty
Much brighter than incandescent
Draws a fraction of the power