These are just right for my needs - I'm using them for storing garden pots.  I provided 4 stars instead of 5 because of the numerous metal-cuts my skin acquired. It says no tools required for assembly but I highly recommend some sort of gloves for protection, the edges are sharp, and a rubber mallet to help lock the shelves in place. Over all, very nice shelves but be careful with the sharp edges.  OUCH!