Summary This is a holder for the go pro camera 1/2 to mount it on an multicopter. it's ajustable by a servo as you can see in the video. the difference between this one and the other is the position of the anglescrew. i prefer this version of the holder, but choose the one which is better for you! =) here is a video about this thing.. http://www.youtube.com/watch?v=v_3FufRltZY&feature=plcp there are 2 versions of this thing you can find the other one on my profile. Please visit our homepage www.3dprinterkit.ch have fun