RAM Long Double Socket Arm with Retention Knob (RAM-B-201-C-ALA1-KR) (sku 55033)The RAM B 201 C ALA1 KRU, long double socket arm with Retention Knob, 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. PRODUCT DIMENSIONS Overall Length: 6" SOCKET TO SOCKET LENGTH 5. 31" BALL SOCKET SIZE B Size (1")