... --320kg per caster 3.Caster material: Phenolic wheel with Steel roller bearing.Solid steel welded construction,zinc plated, double ballrace.4.Chrome ... and wide different usage, such as, for industrial machine, medical facility, furniture, trolley, shopping cart, forklift, scaffold, shelf, etc.Welcome to ... more about us!3.Similar Product:4.Factory: 30 Phenolic steel wheel caster