Everbilt's roller ball casters are made of durable carbon steel, which is a hard, wear resistant, bright surface without burrs, rust resistant and noiseless, This robust material can withstand high stress and heavy loads, offering impressive durability that increases the lifespan of the caster. Roller ball casters offer a true 360° rotation allowing goods to be smoothly transferred in different directions. These roller ball casters have a wide range of applications such as: shelves, chairs, serving tables, cabinets, drawer boxes, desks, table saws, miter saws and can also be widely applied in conveyor line installations and processing systems. Color: Silver.