Pro Trucker CB Radio Antenna Mount for Freightliner Cascadia Truck - Supports Up to 5' Antennas Supports Up to 5' Antennas Grounded Mirror Mount Stainless Steel Mounting Bolts Install On Driver or Passenger Side Mirror Arms Grounded Mirror Mount Compatible with: CB Antennas, Ham Antennas, Scanner Antennas, AM/FM Antennas.