Double socket swivel and ratchet arm features 360-degree center rotation and 180-degree swivel joint with an overall length of 4.3" and a socket-to-socket length of 3.7" 1" Ball double socket arm attaches to any 1" B size ball mounts components, mounting bases and device holders; double ball and socket technology allows for near-infinite adjustability of your mounting system Double socket swivel arm made of powder-coated marine-grade high-performance composite for durability and reliability in the most demanding environments 1" Double socket swivel arm for electronic equipment/ motorcycle/ bike/ car/ engineering machine/ tractor/ agricultural machinery/ forklift and more Backed by a lifetime warranty, if you have any questions about our Double Socket Arm, please contact us by email, we will help you solve it Strg Double Socket Arm with Dual 1" Ball Sockets, 4.3'' Long Double Socket Swivel Mount Compatible with RAM and 1" Ball Systems