This video, titled ‘Minecraft Redstone : Flush Wall Redston Torch Key’, was uploaded by Q20 on 2013-10-20 10:15:44. It has garnered 378 views and 3 likes. The duration of the video is 00:00:51 or 51 seconds.
Fastest design by Daggtex, Smallest one by redstone community(I saw it on minecraft forum I think) and the one that is compatible with Redstone Block by me.