Quadcopter enthusiast and 3D printer owner Davey Tran was tired of the time consuming need to swap broken propellers so he developed the Click! adator. The Click! is a simple 3D printable part that makes attaching propellers to the motors as simple as snapping them on. The sturdy clip is currently being beta tested, but is available for download on Thingiverse. You can find out more about Click! at http://3dprint.com/68098/click-nimblewings/