The stands look great. The price is also good. But it seems that for such a price you can come across a defective product.
In my case, these are three facts.
1. Bent platform (where the monitor is placed).
2. Latch (lock) - plastic and it does not close tightly. That is, if you tilt the rack, then this lock opens under the influence of gravity.
3. And the screw, which is responsible for the roll angle of the platform. It looks like something went wrong on the conveyor belt and someone smeared this screw on the surface.
Unfortunately, the site does not have a function for attaching photos and videos.
My opinion that a good idea (stands really look cool and additional spikes for acoustic decoupling too) was ruined by optimization and cheaper components. If ordering from other countries, keep your fingers crossed and hope for the best.