I bought several of these kits to complete a walk-in closet and love them.  They are extremely sturdy.  The handyman that I hired to put them up took about two hours (but there were 5 shelves) and he thought they were very easy to hang and very high quality.  The ends have a cap on them so the rod can be used/filled all of the way to the end for more hangers.  One shelf did come in cracked but Wayfair is sending a replacement that I can easily install once it is delivered.  My only issue is that the shelves are not a pure white and my closet is white.  Once I get things on them it really won't be an issue.  I love them!