Strong double-adhesive for steady fixing of the Roof Antenna.Just for car decoration purpose, not a genuine antenna. Easy Stick on Installation / No Drilling Required, just clean and dry your car, stick the fin on the surface High brightness, Light levels close to the tail lights Specifications: Can be used as anti-rear-end caution light, and also decorate your car. Driven by wind power, without wiring, easy to install. Provided with double-sided adhesive for you to peel and stick it on the car. This is a generic product which is compatible with branded product