Low Profile Composite Double Socket ArmThe RAP-B-201U, composite standard double socket arm, has a socket at both ends that accommodates 1″ ball bases. 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.Features:Material: High Strength CompositeBall Size: B Size 1″ Rubber BallNote: The “U” in the part number reflects product packaged in poly bagDimensions:Overall Length: 2.75″Socket-To-Socket Length: 2″