Ipad's keyboard - any smartphone adapter

The adapter allows you to assign keyboard Ipad on any phone with adjustable angle. It consists of two parts connected by a joint with a bolt diameter of 3 mm and a length of 44 mm. Groove width of the keyboard should be at least 8 mm. On the site you can use any smartphone is not thicker than 12 mm. The smartphone can be stationed both standing and on the side.