Shop Nilight 12 Inch Roof Top Green Amber Strobe Lights 48LED Hazard Light Emergency Safety Warning LED Flashing Light Bar Magnetic Mount 12V 24V for Cars Trucks Snow Plows Construction vehicles in high quality, support 2 Years Warranty, which are compatible with any 12-24V DC vehicle. Great for the roof of construction vehicles, mail vans, snowplows trucks, skid loaders, etc. Provided maximum illuminate coverage and be visible from a greater distance. Visible in daylight, midnight, rainy, foggy, or snow days.