This 4-pack set of swivel casters is made of high-quality thermoplastic rubber material, which offers excellent corrosion resistance and helps the casters run quietly and smoothly on various surfaces. The casters are easy to install, and each caster has a load capacity of 1440 pounds, making them ideal for moving heavy furniture and other large items with ease. With their 360-degree rotatable feature, these casters can be easily converted in any direction, allowing for efficient and labor-saving movement. The set comes complete with accessories, and the casters are suitable for a wide range of applications, including tool boxes, cabinets, workbenches, and more.