Perko Stainless Steel Bi-Color Boat Navigation LightThis Perko Stainless Steel Bi-Color Boat Navigation Light features two lenses, one starboard (green) and one port (red). It is certified for replacement use only on sail or power driven vessels under 12 meters (39.4 ft.) in length. It is constructed with a black plastic base and a stainless steel top. It provides up to 1 mile of light visibility.Features: Comes With Two Lenses, One Starboard (Green) and One Port (Red); Stainless Steel Top; Certified For Replacement Use Only On Sail Or Power Driven Vessels Under 12 Meters (39.4 ft.) In Length; Black Plastic Base; Specifications: Voltage: 12 Volt; Screw Size: #4; Visibility: 1 Mile; Length: 4-1/2"; Width: 2-1/8"; Click here to download Perko Stainless Steel Bi-Color Boat Navigation Light Installation Instructions