I recently purchased some industrial casters for my company from the Material Handling Products category on ebay .My analysis of this product showed that they could handle heavy loads and were outfitted with a polyurethane coating, which made them move smoothly with minimal noise. Additionally, the swivel motion was incredibly fluid and easy to maneuver, perfect for our factory floor. The only downside was the price point but the quality definitely justified it. Overall, an excellent purchase for any industrial and scientific company..