The Joy Factory MagConnect Carbon Fiber Car/Truck Headrest Mount Holder with Universal Tablet Module for Tablets (MNU506) Compatible with any case or device with a flat or smooth surface Convert any tablet or mobile device to be MagConnect-ready for convenient mounting Highly Flexible with two spherical joints for overall 360 rotation Carbon fiber arm for lightweight strength Adjusts to attach to a round surface maximum 0.75" and minimum 0.38"