The Joy Factory MagConnect Carbon Fiber Car/Truck Cup Holder Mount for iPad Air 2 (MMA308) Base Diameter: 2.31" - 3.25" The MagConnect patented technology is advanced, but using it is simple. First, the iPad is secured into a hard-shell Snap-On holder and when attached to a compatible MagConnect product, the powerful magnet on the mount instantly locks your tablet holder. MagConnect mounts are built of high-quality carbon fiber arms. This superior material is lightweight and durable. The powerful combinations of carbon fiber with carefully designed joints produce mounts that are both easy to maneuver and sturdy to use. MagConnect mounts come equipped with two spherical joints for multi-angle positioning; one at the top of the mount and one at the base. Each joint can rotate 360 to easily position your tablet for optimum ergonomics thus reducing neck & back strain. Each MagConnect tablet holder is equipped to work with any MagConnect mount and designed to work with Apple Smart Cover. And since technology is forever evolving, so is MagConnect. New tablet holders are crafted as new devices are released.