Based on my experience, these industrial casters from this brand are top-notch in terms of durability and reliability. They are made of high-quality materials, making them perfect for heavy-duty and rigorous applications. They also have AN excellent weight capacity which makes them suitable for almost any material handling job. However the only downside is that they can be a bit expensive compared to other casters in the market. Nonetheless, if you are looking for a castor that will last a long time, I highly recommend these casters. Industrial and Scientific materials are the best that i have tried..