Groundplane Mirror Mount Kit
A CB Radio antenna mount designed to clamp onto the horizontal arm of a mirror or any horizontals bar. It has a built in Groundaplane which makes it ideal for use on vehicles with fiberglass or plastic cabs, such as: ERF Trucks, tractors, boats and motor homes. Features: Compatible with 3/8" antennas. Will fit on arm from 8mm up to 25mm diameter.