For those with a secret lab desk, the NON sit to stand version, this works perfectly and can even mount/clamp to bars under the desk top so it is not visible on top of your desk! It is pretty heavy duty/made well and VERY easy to install. My only complaint is this does NOT work well for towers that do not have a flat bottom. I had to find an object wide and long enough to place into the holder for my tower to be stable: I ended up using two pieces of wood for now. Okay, maybe I have another complaint: the surface areas that clamp onto your desk are bare metal and can slide if your desk is also metal. I had to find material to put in between so it would not shift. Rubber pads would have been nice. An additional bonus would have been if the screws they sent were also black, as the silver definitely stands out against the black holder.