The RAM-101U-247-4 consists of a dual socket arm, a round base with a diameter of 2.5 inches, and the universal AMPS hole pattern, as well as a 4-inch clamping base. The clamping base can wrap around a maximum width of 4 inches and is secured by tightening the two plates with the included screws and nuts. The rubber ball socket technology absorbs shocks and vibrations, allowing for nearly infinite adjustments for perfect viewing angles.