These antennas are very small in design and appearance. A powerful mini magnet (only 2") holds the antenna securely at all times. The 3" round integral ground plane on the IMAG5 can serve as a removal handle. The low profile 5 dBi whip with tight winding phasing coil reduces potential whistling noise. These antennas can be mounted on virtually any surface. A metal surface will provide best contact with the powerful magnet.