Sirio Mag 125 PL Magnetic Mount and CableProfessional Sirio Mag Mount for use with Sirio Antennas with SO-239 socket for antennae. It is fitted with a removable rubber boot. This comes complete with cable and PL Plug. Width of base: 5" 145mm or nearly 6 inches in diameter (5 7/8''), which makes it perfectly adequate for CB aerials up to a..