TRAM 3251 UHF SO-239 5/8" Hole Mobile Antenna Mount PL-259 Connector RG-58 Coax Hole Mount for SO-239 Mount Antennas Mount : 5/8" Hole Connector : PL-259. Coax : 17ft RG-58 Tinned Copper 95% Shield Center Conductor : Stranded RF Pin : Gold Plated for superior RF contact