This mount is incredibly robust, all parts are well engineered. Instructions could be better, but having carefully studied the diagram and the parts themselves it is pretty much self explanatory. I used mine with two different sized monitors (23inch and 19inch), and it works beautifully. I now have desk space, monitors set to the right height, and a much improved setup. Ordered on standard delivery, arrived the next day... excellent service all round. In hunting around before purchasing, I could not find anything to touch this for under a £100, so a bargain to boot!