The HOWDIA casters are an excellent addition to any industrial and scientific setting. They are well-made and durable, with a smooth swivel and great weight capacity. The bearings are top-quality, providing a noise-free movement, while the brakes work perfectly, keeping the trolley locked in place. The only downside is that they are a bit pricey, but the quality is worth the investment. Overall, an excellent product that gets the job done!