That’s a nice monitor arm Dimi! I almost bought one of those for the Mac to sit on as they have a very smooth action.
The one I have for my monitor is this one: https://www.amazon.co.uk/gp/product/B01N5FTCJE I ended up getting it as I thought I might get one of those huge ultra wide monitors or an Apple display at some point (probably not going to tho, thinking more about an OLED TV as a second display instead).
Someone with both those arms in the second vid here: What monitor(s) do you have for programming?