Your review: I have now purchased several sets of rigid and swivel casters of this style. I installed them on carts made of treated hardwood that are used around our dairy farm. These casters do not have any thin metal such as tire rims that would corrode off in this harsh environment. All components are heavy duty and the roller bearings can be greased. The rubber wheels are fairly hard, not much cushion, but that is a fair trade-off to get the high load capacity. Overall a good product.
Pros: Heavy duty, greasable roller bearings, high load capacity, no thin metal rims to corrode off.
Cons: fairly hard rubber tread--not much cushion