3-Way Mobile CB Antenna Mount 3-way mount clamp adjusts for horizontal or vertical rails or mirror brackets;Can be used without a clamp for installation on flat vertical surfaces;Chrome plated steel;Includes screw-on connection stud (K4A) and all necessary mounting hardware Firestik Firestik 3-Way Mobile CB Antenna Mount - K-64A K-64A CB Antennas & Mounts