The Joy Factory MagConnect Carbon Fiber C-Clamp Mount for iPad Pro 12.9" 1st and 2nd Gen (MMA402) Compatible with the iPad Pro 12.9" 1st (2015) and 2nd (2017) Generations C-Clamp base adjusts to any flat surface maximum 1.67-Inches and any round surface maximum 1.67-Inches and minimum 0.38-Inches 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. 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. Each joint can rotate 360 to easily position your tablet for optimum ergonomics thus reducing neck & back strain