The RAM-B-202-UN9U consists of a composite spring loaded cradle, expandable grip arms, additional bottom support keepers and 1" ball base adapter. Included are extra easy access grip knobs, located on the back of the cradle for quick release of your tablet. The RAM-B-202-UN9U expands and contracts for perfect fit of most 9"-11" tablets with or without sleeves, as well as some smaller tablets. The included 1" ball base includes hardware to attach directly to the back of the cradle and is compatible with all "B" size double socket arms. Please verify dimensions of your tablet below for compatibility with the X-Grip®. The X-Grip® cradle is compatible with tablets devices that will fit the dimensions listed below. It is important to verify the dimensions of your tablet with a case/sleeve/skin when determining the overall size.