Reliable illumination to ensure boat is highly visible on the water Versatile light can be conveniently folded down during daylight hours or when the boat is covered Powerful light provides 3-mile visibility for sailboats or powerboats under 66 feet Durable light mounts vertically and has a ¾-inch-diameter anodized aluminum tube Clear lenses and two included 12V DC/8 CP lamps provide outstanding lighting Chrome-plated zinc base is pre-drilled to accommodate pair of #8 screws, comes with plastic adapters for flat or "V" mounting Light is 10-1/4 inches high and base measures 2-7/32 inches L x 5/8 inch W