First and best, it's very sturdy.  I got this to replace old workroom shelves for my home-run small business and it needed to hold a lot of heavy stuff.  Mine's got a small shopvac, a lot of supplies, a drill, a few small appliances, and a full toolbox on it with no problems.  It also looks very nice, a huge upgrade from my old plastic storage shelves, and was easy to put together.