Streamlined car antenna designed for discreet installation for all radios. Features a four-inch "shark fin" design with a durable brass base. Enhances radio system performance with a 3dB gain, extending the communication range. Installation requires a 3/4" hole. Comes with your choice of 6, 8, or 10 feet custom made coaxial cable ending in a BNC-type connector, and adapter Compatible with radios operating within the 450-470 MHz range.