I like the concept but when I installed it in my car I noticed that the adjustment is not as convenient as I would like. It feels like the locking screw is about to break and can no longer hold the device in place. I have several machines so I will keep looking until I try these. I will update my review when I use it. Been using it for a few days and seems to be good. I can also adjust it with the locking screw tightened, but it doesn't seem to be moving on its own, at least not yet. I like the way it holds my device.