Wheelchair Rail - Tube Mount with Extension & Tablet Holder for Apple iPad 2 (sku 21795)aThis Mount features a Small Tough Claw 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 Tablet Holder for an iPad 2, iPad 3 & iPad 4 in a heavy duty case The spring loaded tablet holder design makes it easy to load and unload a tablet in a heavy duty case along with keeping it secure while on the go Cup ends are designed to optimize