http://www.harborfreight.com/tool-storage/tool-carts/26-in-4-drawer-580-lb-capacity-glossy-black-roller-cart-61634.html
Caveat: Assembling it takes non-trivial effort, perhaps 2 hours. There are 3 types of bolts, quite similar, but all of them, along with plenty of nuts and washers, are conveniently included together in one bag. The 2 handle bolts are similar enough to the others, that I ended up with no "handle bolts" the first go around.
BTW, for those that don't like Harbor Freight products, I saw the same unit on Home Depot's web site for $119.99--so you could buy it there instead! ; )
Bill