Magnetic Mount version features neodymium magnets the strongest type of magnet, featuring up to 120 pounds of magnetic pull Additional color options excellent option for City/County Municipal, Cement Mixer, and other Heavy-Duty, Construction or Off-Road Applications Designed for Surface Mount as well as Pipe Mount (1NPT pipe thread) Dual and Quad Class I flash patterns meet legal functions Magnetic Mount includes rubber suction material for extra insurance, reducing any risk of separation of light from contact surface Rugged black powder coated corrosion-resistant die-cast aluminum base Magnetic Mount constructed of high-quality aluminum covered in a protective rubber, featuring neodymium magnets with up to 120 pounds of magnetic pull Electronics and Light Source are fully encapsulated in epoxy to protect components from moisture damage and corrosives Mounting gasket and #10 installation screws included Developed through Truck-Lite experience in both LED Design and Heavy-Duty Warning Lighting Systems Design Cigarette Plug features On/Off switch with LED indicator light 5-Year Warranty Threaded lens design does not require tool to replace lens Optics designed specifically for LED Technology, not as a gaseous discharge retrofit Protected against industry-standard electrical transient per SAE J1455 Linear supply offers reduced EMI over that of gaseous discharge systems Designed without external optics to reduce maintenance and cleaning