The RAM-B-177-C-TAB2U consists of a glare shield clamp base, long double socket arm, round base adapter and Tab-Tite^™ universal clamping cradle. This mount is designed to mount to the lip edge of a flat surface up to 12.70 cm (5")/20.32 cm (8") thick. Popular mounting edges include a car side window edge lip or glare shield on an airplane. The base has two composite bolts that, when tightened, clamp the base to the lip surface. The spring loaded Tab-Tite^™ cradle makes it easy to load and unload your tablet, along with keeping it secure while on the go. Interchangeable cup ends are designed to optimize the functionality of your tablet, allowing access to audio jacks, usb, power, and other ports, your tablet can be used just as it was intended. The included backplate is interchangeable with various size support cups, making it compatible with numerous tablet models. New detachable support cups are the only components needed for purchase, attach to the backplate for support of your new tablet. The included back plate is interchangeable with various size support cups, making it compatible with numerous tablet models. New detachable support cups are the only components needed for purchase, attach to the back plate for support of your new tablet.