EVO Formance white LED Eye-brows use extremely bright and flat LEDs mounted on a flexible 9" black strip. When applied to a vehicle headlight, they work as daytime running lights. Because of their small size and high brightness, they can be installed in a wide variety of lighting applications. Useful for Tricking out your truck, car, Big Rig, R/C toys, and yes even your Boat-remember these are 100% waterproof. The LEDs will also enhance the safety features on your vehicle by adding additional lights. 12 volt power source with a 3 amp in-line fuse required (not included). No ballast necessary. Features a high quality authentic 3M adhesive strip for quick and easy mounting. Don’t Change… Evolve