The RAM® Pipe & Socket 19″ Extension Arm for Wheelchairs is designed to mount nearly any phone. Includes C size short socket and works with compatible B size phone and tablet holders. KEY FEATURES Made from marine grade aluminum and high strength composite Overall Height: 19” Bottom Arm Socket: C size Top Arm Socket: B size This kit is designed to mount nearly any phone to the seat track on most major wheelchair brands, including Invacare, Permobil, and Quickie. The included C size short single socket arm can be attached to the RAM® C size wheelchair track base (sold separately), and connects to the included pipe extension and the RAM® B to C size swivel double socket arm. To complete your setup, pair with a compatible B size tablet holder.