Our caster set includes four casters, and for the convenience of our customers, we provide iron washers and screws. Each caster has a load capacity of 150 lbs., with stable quality, highly favored by customers. The double bearing design ensures both load capacity and stability, with excellent bearing quality that is wear-resistant and durable. These 2-in. small casters are exceptionally quiet during movement, making them particularly suitable for indoor use. They won't damage the floor, offer flexible movement, and leave no traces behind. Widely used in various indoor and outdoor settings such as workbenches, carts and furniture, they are your mobility experts. Each caster can bear 150 lbs., and with four casters, they can support a total weight of 450 to 600 lbs. Made with double bearings and polyurethane material, they move silently, leave no marks, and protect the floor.