Firstly no negative point, well yes sometimes happens is rigid, very well made so quite heavy, adjustable in all directions, discreet possible, easy to install for an informed and well equipped handyman to peg in a wall not hard because we do not fix this dream of support on plasterboard that can never resist the pull of the ankles when the holder of a screen 15 to be unfolded 20Kg maximum !!! That said all equipment provided is first class, including the ankles, which is quite rare. In short once installed it is only happiness for almost ridiculous price in terms of product quality.