This adapter lets you mount your Droid smartphone on a tripod for taking pictures or shooting video.Works in either landscape or portrait positions. Buttons and USB port are accessible. Mounts on any standard tripod with a 1/4 20 thread.I have one of the original Motorola Droids with the slide-out keyboard. It is 11.5 x 6 x 1.5cm. If your phone has different dimensions you may need to modify the design slightly.To get a better look at it, see the following video:http://www.youtube.com/watch?v=Vp-luPM1UmMPrint, then press a 1/4 20 nut into the hexagonal hole. I used a vise and it popped right in. If you don't have a vise, a hammer would probably work.