Comet M-24M - VHF/UHF Dual Band Magnetic Mount Antenna - Ham Radio
Most mag mount antennas require you to pull the entire magnet and antenna of the vehicle for a car wash, secure it from theft, etc... This typically ends up scratching the mounting location. The Comet M-24x element is threaded onto the magnet. Simply unscrew the whip to lock it away or to allow clearance under parking structures, etc.