... : 100mm,125mm,160mm,200mmBearing: ball bearingSteel thickness: 3.5x3x3.5mmPlate: double ball racewaysFinish: Zinc-plated,power coatingType: swivel,rigidMounting: top plateFeatures ... corrosion4.brake:without brake,front double brake5.applicable temperature: -20~806.suitable scope: factory,warehouse shelf, heavy-duty appliance, etc. 2010 new heavy-duty caster