The RAM-B-201-201U consists of two standard-length double socket arms, connected by a double ball adapter. A single spring inside each arm opens the end sockets, allowing you to pivot the ball and socket connection.
RAM Double Socket Arm with Dual Extension and Ball Adaptor (Med
Buy the RAM Ball Adapter with 1/4 - 20 Female Threaded Hole and
Ram Mount Store - B Size - Page 1 - Liquid Surf and Sail
RAM® Mounts Aviation Catalog by RAM Mounts - Issuu
RAM® Tough-Claw Double Ball Mount with Universal Action Camera
RAM Double Socket Arm with Dual Extension and Ball Adaptor (Medium
RAM X-Grip Phone Mount - Universal with B 1 Ball
15CM Length Aluminium Alloy Double Socket Arm for with 1Inch Ball
RAM-B-101U-225B RAM Drill-Down Double Ball Mount with AMPS Plate