Tablet Holder Mount for Wheelchairs (sku 21115)Wheelchair Universal Tablet Rail and Tube Mount with Extension. (sku 21115) This mount features a tool less Small Tough Claw base with 1. 5" rubber ball, two double socket arms, a double ball adapter for extra length and articulation together with a universal sprung loaded tablet holder. Both the mount and tablet are easily attached and removed within seconds, and with four points of rubberized 360 degree articulation, you are not limited in the