... 2.Material: PU, rubber ,nylon,iron 3.Type:fixed,Swivel,with brake 4.Timely shipment 5.OEM acceptable Heavy duty caster wheelsType ... :fixed,Swivel,with brakeSurface finish:Plate Zinc,Spray plasticSteel thickness:6mm MeterialSize(mm ... *45137 6202250125*40158280150*40186300200*40230350 China industrial Heavy duty caster wheel with brake