I use this to hold up a 42" TV monitor for displays.
It came with a generous selection of suitable mounting bolts and spacers, though I may have used some of my own as they were next to me at the time I fitted it.
The TV has a VESA that is 200 wide by 100 high and for a while I thought that I would have to drill some new holes, but they are included in the main plate. I didn't need to use the extension arms for VESA larger than 200 x 200, but having seen the quality of the product I would have no concerns about doing so.
It was quick and easy to fit, and mounts on a 35mm tube very easily, is strong and of good quality. I tend not to use the fixing knob at the side to prevent the TV rotating, but that also seems sturdy and well made.
The only slight modification i would like to see is a second fixing nut on the top of the tube so that the fixing knob could be stored there out of the way - but this is to do with the space I have in the TV storage/transport case I use.
Brilliant item - love it.