Wheelchair Rail Mount with Extension & Tablet Holder for Galaxy Note 10.1 Wheelchair Rail and Tube Mount with Extension and Tablet Holder for Samsung Galaxy Note 10.1 This Mount features a U-Bolt with 1.5" Rubber Ball, a Standard Double Socket Arm 1.5", a Double 1.5" Ball Adapter, a Double Socket Swivel Arm with hinge for 1.5" Ball to 1" Ball together with a Universal sprung loaded Tablet Holder.
eBay