I won't go on too long with the description of this gadget, I'm sure you already know what it's for.
It is very useful mainly for two things, to place the monitor at the best height, position and tilt for the neck and back and to recover the space lost on the table due to the stand.
It fits any monitor (including ultra-view or ultra-panoramic monitors) with 75x75 and 100x100 mm VESA mount, from 2Kg to 9Kg and from 19 to 32 inches.
The rest of the features are detailed in their manual and on the manufacturer's website.
I have been watching the evolution of its price for a while and I found it at 29,74€. A day after I bought it, it went back up to 36,99. If you are patient and follow its price on sites like Keepa or CamelCamelCamel you can probably get it at 29 or less because I've seen it go down several times.
I should have bought it a long time ago. I like the way it has turned out. It responds well and allows you to position the monitor in almost any position. Once you get the settings just right by tightening or loosening at its three points, it moves smoothly and fairly accurately, so I've gone back to follow its price to get another one for the second monitor.
The mounting, both with the clamp that bites into the tabletop and by drilling into the table, allows the arm to be securely anchored. Constructed of metal and plastic, it looks sturdy. Apart from some plastic that fits poorly, the finish is quite good for what it costs and is noticeably better than the cheaper ones from other brands.
It has two cable ducts in its two sections and on its base it has a couple of spaces with USB connectors in case you want to add two USB cables (not included).
It comes with all the necessary hardware and three Allen keys so you only need a screwdriver if you install it with the clamp or a drill and a 10mm drill bit if you decide to mount it by drilling the table.
The height adjustments can be a little fiddly, but once you get the hang of it you can set it to any height. It swivels 360 degrees, which allows a monitor to be placed vertically and also allows it to be lowered all the way down to rest on the table and almost completely attached to the wall.
And to finish, the obligatory before...
...and after.