... roller steel yoke 3)Wheel diameter: 100mm,125mm,160mm,200mm caster:Wheel: PU tyre + PP rimFork: high grade cold- ... Zinc-plated,power coatingType: swivel,rigidMounting: top plateFeatures:1.caster: rigid caster, swivel caster2.PU wheel: excellent rolling resistance,anti-abrasion ... temperature: -20~806.suitable scope: factory,warehouse shelf, heavy-duty appliance, etc. 2010 new heavy-duty caster