Perko Universal Replacement Boat Stern LightThis Perko Universal Replacement Boat Stern Light provides exceptional performance and looks good on any boat. It is designed for extreme durability and long lasting use with its locking and large threaded collar. With an included 12 Volt bulb, this alpha series universal boat stern light is certified for use on sail and power driven vessels under 20 meters (65.6 ft.) in length.Features: Locking Collar; Large Threaded; Alpha Series Universal Pole Light; Certified For Use On Sail and Power Driven Vessels Under 20 Meters (65.6 ft.) In Length; Specifications: Bulb: 12 Volt (Included); Pole Rake: 0 Degrees; Pole: 3/4; Click here to download Perko Universal Replacement Boat Stern Light Installation Instructions