The RAM double swing arm mount includes two 6" long bent swing arms mounted on a vertical surface mounting base. At the end of the device mount is a rectangular 6.25 x 2" top base. The pivoting points of the mount allow a complete 360 degree rotation. RAM-109V-1 Dimensions A. Overall length: 17.63" B. Overall height: 11.58" Ball Size: 1.5 Inch Rubber Ball Material: Powder Coated Marine Grade Aluminium Color: Black Components RAM-109V-B RAM-111BT