These Industrial and Scientific casters are solid, dependable and lockable. They are built to carry heavy loads and are corrosion-resistant.The threaded design ensures that the wheels stay secure and do not come loose during transport. Additionally, the lockable feature provides added security and stability while in use. The only drawback is that they are a bit pricey compared to other options on the market. Overall, the Hirate Threaded Lockable Furniture Casters are an excellent choice for any industrial or scientific application..