This rating would have been five stars, but one of the sockets had a warped top. Mind you, the first two sets of the two I bought were fine; was deformed in the second two sets for two. Of the eight, seven were perfect. curve still works. There was no damage upon delivery - most likely a manufacturing defect. Not worth the hassle of sending it back. That's a bit annoying, though, and is the reason for the four-star rating. They are easy to assemble. If you're a bit obsessive and want the height adjusters to point in the same direction, you'll have to experiment and maybe try screwing the legs in a few times to get what you want. I'm not interested in that aspect. I mainly use them to support monitors and use the shortest height. They are more than strong enough for that. I like her. Too bad one is wrong.