Mount installs easily into the front, back or side profiles of your Slimline II rack. The rotation function allows your aerial/antenna to tuck neatly beside your rack when maneuvering under overhead obstacles or into low overhead parking areas. Antenna mount rotates 90-degrees forward or backward with a 180-degree total rotation capability. A index pin allows the aerial/antenna to be dropped down. Includes an additional, bolt-on, magnetic plate for aerials/antennae with magnetic bases. Side guards protect the aerial/antenna connection from potential damage caused by flying rocks and other road debris. 17mm diameter mounting hole with cable slot.