This is the long socket arm that will fit "D" sized balls (2.25"). A single spring inside the arm opens the end sockets, allowing you to pivot the ball and socket connection. This socket technology allows for almost infinite adjustment and perfect viewing angles.

• Dimensions: Overall Length: 12.98" (329.7mm)
• Socket-To-Socket Length: 11.41" (289.8mm)
• Material: Powder Coated Marine Grade Aluminium
• Ball Size: D Size 2.25" Rubber Ball

Note: The "U" in the part number reflects product packaged in poly bag.