Terrible shelves - they will not tighten up against the wall. Wall brackets are fine, and solid, but the problem is the way the shelves connect to the brackets, with two tiny screws. I put a couple of books on one and the tilt of the shelf becomes very noticeable. They are very loose - you can wiggle them up and down. I will have to shim these shelves in order to use them. Stay away from these.