RAM Mount Flat Surface Horizontal Single Swing Arm Mount [RAM-109HU]RAM Flat Surface Horizontal Single Swing Arm Mount The RAM single swing arm mount consists of a 6" long BENT swing arm mounted on a horizontal surface mounting base. At the device mounting end of the mount is a rectangular 6. 25" x 2" plate. There are two (2) pivoting points on the mount. One at the swing arm and base and one at the center of the rectangular plate and the end of the swing arm. Each pivoting point allows a complete 360 degree rotation.