The RAM-B-189-UN9-ALA1-KRU consists of a double 3.3" twist lock suction cup base, double socket arm, extended retention knob and universal X-Grip cradle for 10" 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-ALA1-KRU expands and contracts for perfect fit of most 10" 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.