Attwood All-Round Boat Stern Light w Fixed Base This Attwood All-Round Boat Stern Light w Fixed Base features a two-mile, 360 light visibility with an included 9-watt wedge base lamp. It installs with required 10 fasteners and is great for use on pontoons, hard tops, and rader arches. Rated for 50,000 hours of use, this boat stern light is for use on boats up to 39.4 ft. 12 meters and provides exceptional satisfaction. Features Rated For 50,000 Hours Of Use Two-Mile, 360 Light Visibility For Use