Once together, this is a solid product; however, some quality issues you might want to be aware of.
The power coating is awesome, except that it's all inside of the threaded holes.
One (out of four) of the connecting plates was beyond just running a bolt through to remove the paint and required re-tapping the threads altogether. If you do not have a tap, you'll need to purchase washers and nuts and drill out the threads to get it to fit.
One of the retractable wheels did not have enough gap to allow the wheel support to move up and down freely and needed some convincing with a pipe wrench to add more clearance.
One of the threaded support rods on the side require a pair of vice grips to get the threads to recut. Seems the threads are metric and I did not have the appropriate tap to clear the hole.
Very solid unit, just beware, you may need it "convince it" a bit during the assembly.