Good quality product, installed fairly quickly, tools are provided aside from a Philips screwdriver. By cons I have not been able to install my screen simply because the VESA support my screen is not compatible with the support of the ergotron LX, it's 75 * 75 or 100 * 100 while on my screen it takes 200 * 100. It would be interesting to notify that clear information on product characteristics that are rather sommaires.Messieurs Amazon, try to treat all products in the same way as regards the information. So, I need to order an adapter hoping that it will work.