Compact, perfect size desk when you dont have space but need to set up multiple monitors.
Ive measured that i can add two 21 inch monitors and it will extend only 6cm from either side. Only needs a under desk cable tray for the adapters and extension box.
All the screws and holes were aligned for my unit, took me an hour to set up alone. (Took some time to figure out the perpendicular bolt)
Only negative point is that its made in china (not that Chinese people are bad, just that Chinese government is)