The RAM-B-189-UN9-FRO1-KRU consists of a double 3.3" twist lock suction cup base, double socket arm, extended retention knob and universal X-Grip® cradle for 9"-11" Tablets. Included are extra easy access grip knobs, located on the back of the cradle for quick release of your tablet. The RAM-B-189-UN9-FRO1-KRU expands and contracts for perfect fit of most 9"-11" tablets with or without sleeves, as well as some smaller tablets. Please verify dimensions of your tablet below for compatibility with the X-Grip®. The X-Grip® cradle is compatible with handheld devices that will fit the dimensions listed below. It is important to verify the dimensions of your handheld device with a case/sleeve/skin when determining the overall size.