Are you talking about the "industrial service carts"? If so, I use one of these at work (not HF, but the same material) and they are good. I use it to haul parts from the parts department and move wheels and tires to and from the tire machine. I'm not sure about HF's casters, but the cart I have takes a **** load of abuse (way overloading, getting hit by cars, etc.) and it keeps holding up. I want to get one for at home if I ever get my garage back (I have no basement and the garage is for storage right now).