The incandescent fold down anchor/masthead navigation light 7201-P-7 has a black composite base for horizontal mounting and incorporates a rail adaptor. All Attwood All-Round Fold-Down Navigation Lights include a new durable, easy-to-use, easy-to-install LightArmorTM Fold-Down Base. It provides 2-mile, 360 degree, illumination for boats up to 20meters/65.6 feet long. It also has an anti-glare lens to help preserve your night vision. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance.