After trying this product, I'm thoroughly impressed with the quality and durability of these casters. As someone who regularly moves heavy equipment around my industrial shop, these casters have made my life so much easier. They glide smoothly over different surfaces and the polyurethane material is tough enough to withstand constant use. The price point is also very reasonable for the quality you're getting. The only downside is that they're a bit on the heavy side, but that also means they're sturdy and long-lasting. Overall, a great investment for anyone in the industrial and scientific field looking for reliable casters.