Long Double Socket Arm with Retention Knob for B Size 1 inch Balls The RAM-B-201-C-ALA1-KR, long double socket arm with Retention Knob, has a socket at both ends that accommodates 1 inch 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. Dimensions: Overall Length: 6 inch Socket-To-Socket Length: 5.1875 inch
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