Beautiful shelves. Very sturdy. 
I ordered two. The first one went together fine. But the second one took a lot longer to assemble. When at the last screw to tighten, I realized the whole didnt match up. I unscrewed and switched brackets to see if that helped, but it was still off, there was no way to tighten the bolt in the whole that was not lined up. So I had to take it some of the brackets off again and file the original whole to create a new whole. Thankfully I had a round file strong enough to file through steel. That was an exercise in patience. I could not leave it without the the final screw in place. And no way was I going to take it all apart and try to stick it back in the box and try to return it. 
But finally in the end I love them.