... kezhi new type -med heavy duty industrial casterMed-Heavy Duty Caster /Three Size available (3'',4'',5'') [General Feature]1 ... steel , flourish casting pp core .4.Top plate swivel brake type ,fixed type ,brake ,threaded stem ,bolt hole type are available for ... plating and Black Electrophoresis finishing available 7.Applications: Hand truck,Trolley cart8.Assorted colors can be orange /gery/white /green9 ...