When I tried these casters I was impressed by their sturdy design and the smoothness of rolling .They are made of high-quality rubber, which makes them durable and long-lasting. They were easy to install on my workbench, and they move effortlessly even on uneven surfaces. The only DOWNSIDE is that they are a bit pricey compared to other options in the market. Overall, I'm satisfied with my purchase and highly recommend them for anyone looking for quality and reliable casters..