VEVOR Book Cart, 330 lbs Library Cart, 31.1\" x 15.2\" x 49.2\" Rolling Book Cart, Single Sided V-Shaped Sloped Shelves with 4-Inch Lockable Wheels for Home Shelves Office and School, Book Truck in Black I have a handful of old library carts bought from the state surplus, the old, very solid, welded and enameled metal carts you probably remember from your school or public library. These are not those. Instead, these are built from 8 separate pieces, bolted together instead of welded, so they'll never be as handsome as the smooth, welded library carts, but they're still pretty solid and not bad looking. For the (currently under 100 bucks) price point, I don't have any real complaints. I assembled this with in the included tools (hex key and little stamped metal wrench) by myself in under an hour. (If I'd had the proper bit for my drill driver, It would have taken half that, or less.) The wrench for the casters wasn't a good fit, but the one for the acorn nuts was fine. Assembly involves 1) forming the three shelves by bolting together 2 pieces for each shelf with 5 bolts each; 2) bolting the shelves onto the sides with 8 bolts per shelf; 3) bolting on the literature rack with 4 bolts and acorn nuts; 4) screwing on the casters; and then 5) tightening everything down. Except for the literature rack, all of the bolts screw into threaded ends already attached to the pieces, so for the most part, you don't have to fiddle with any nuts and everything tightens down nicely. All of the hardware was solid: no misthreads or misaligned holes. The casters are huge and heavy duty, should be fine with a laden shelf. Besides book carts, these make great power tool carts, with charging stations if you attach a few power strips to the sides (the holes make zip tying them on convenient). The heavy duty shelves can easily hold an array of heavy power tools and chargers.