Francis 300-Cb24b Antenna is a pre-tuned, 48-inch black fiberglass antenna designed for automotive use. It is compatible with radio brands such as Cobra, President, RoadKing, and Unide. This antenna is lightweight at 0.7 ounces and made in the US. With a length of 54 inches and a width and depth of 3 inches each, it offers a sleek and durable option for improving radio reception in vehicles.