The holder is well thought out in principle. Everything makes a high impression. Even the clip for the vent is made of metal. You get through the spring mechanism the holder quite well mounted / dismounted. With regard to the stability we must not expect miracles if you have a large 10-inch tablet yet so as it keeps reinsteckt.Aber but contrary to expectations quite well. The clamping device for clamping the tablet holds wonderful. Here you have to have no concern that it flies out sideways. The removal of the tablets is very convenient by the rückwertigen clamping lever which is also within easy reach. Only the connection by means of ball joint for Vent Clip is a bit shaky. But .... as I said at smaller tablets certainly no problem. And with shaky I mean, a little springs but certainly does not act, it just very annoying. I am happy.