This is the only drop forged 304 stainless steel kingpinless caster on the market, and is designed to withstand harsh environments and applications that would normally rust and corrode standard zinc plated casters as well as hold up to abusive and demanding shockload applications that may cause traditional kingpin casters to fail. The top plate and inner raceway is a unique one piece construction (stronger than machined and welded designs) the inner and outer raceways are precision machined and are held together by 3/8” ball bearings. The legs are robotically double welded to the outer raceway, for optimum mobility, strength, and stability. These casters will exceed your expectations; not only are they durable and rust resistant, they are nearly indestructible and provide a smooth ergonomic swivel action. Popular applications include; cleanrooms, laboratories, medical & hospital facilities, animal cages, pharmaceutical plants, autoclaves, food processing, bakeries, dairy, food service, catering, hospitality, chemical factories, marine environments, fisheries, cruise ships, etc.