Iron-core pu caster 10*2 inch 1,swivel top plate ,pu&iron wheel 2,plate Zinc ... or spray plastics 3,steel thickness 5.5mm or 6mm Iron core ... pu caster 10*2 inch 1,swivel top plate ,pu&iron wheel2,plate ... Zinc or spray plastics3,steel thickness 5.5mm or 6mmFeatures:1) Heavy duty industrial caster with cast iron molded PU ...