RAM Double Socket Arm 2.25".
The RAM D-201U... standard size double socket arm, has a socket at both ends that accommodates 2.25" ball bases. A single spring inside the arm opens the end sockets, allowing you to pivot the ball and socket connection. Socket technology allows for almost infinite adjustment and ideal viewing angles. Material: powder coated marine grade aluminum. Overall length 8.375". Socket to socket length: 6.5625".