Iron-core pu caster6*2 inch 1,swivel top plate ,pu&iron ... spray plastics 3,steel thickness 5.5mm or 6mm Iron core pu caster 6*2 inch 1,swivel top plate ,pu&iron ... ,steel thickness 5.5mm or 6mmFeatures:1) Heavy duty industrial caster with cast iron molded PU wheel2) Swivel, rigid, swivel with ... , 200 x 50,250*50,300*50mm 6 inch Iron-core pu caster