Once we got them up, the shelves look terrific and are a nice addition to the empty wall in our kitchen....BUT....The directions made it look fairly easy to put the shelves up.  However, it was not.  The directions basically say that you first screw the plastic anchor into the wall- well when we did that (after making a starter hole) the plastic anchor snapped right in half! We ended up having to drill a small hole all the way through drywall. Then we gently tapped the anchor into that hole up to its threads.  From there we were able to screw the anchor in. The screws that go into the anchor were not much easier to get in. (!!)
Advice for buyers: Make sure you measure very carefully and exact...and eat your Wheaties!