Star Quad Flash Compact Strobe Beacon Powerful permanent mount strobe beacon with built-in quad-flash pattern This low-profile beacon is designed for power and versatility, but at an economical price Includes a polycarbonate lens with fresnel pattern to disperse light, and a sealed o-ring base to keep elements out and dampen vibrations Easy-on/easy-off construction for smooth repairs, and measures only 4'' tall to fit almost anywhere on your truck Includes pigtail for easy mounting and a 1-year limited manufacturer's warranty for peace of mind