Wheelchair Rail & Tube Mount with Extension & Model Specific iPad 3 Cradle (sku 21875)Wheelchair Rail & Tube Mount with Extension & Model Specific iPad 3 Cradle 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 Model Specific Roller design iPad 3 Cradle The patent pending roller design allows for smooth placement and removal of the iPad 3, while keeping it secure when on the go The iPad 3 will have to be removed