Heavy Duty SO-239 5" Antenna Magnet Mount w/ 15ft Cable - ANLI JM-100UHF Heavy Duty Black large 5 inch diameter Magnetic mount accepts Optional Antennas having a PL-259 " UHF , M or PO " base thread. Includes 15ft RG-58A/U Built in Coax cable with PL-259 Connector on Radio end of Cable. Great for Amateur radio & Two way mobile antennas having an UHF base thread. Fits ANLI WH-713 and WH-717 DualBand antennas, & other " UHF" ( SO-239 , SL16 ) type base thread antennas. Genuine ANLI Brand Item In Original ANLI Package.