light-duty electrophoresis top plate caster with brake wheel material:PP, PU, PVC Dia.:40mm,50mm,63mm ... , electrophoresis rim, double ballrace swivel head2.Dia.:40mm,50mm,63mm3.Matching with different fittings such as swivel fixed, brake plate, threaded stem4 ... you need customized casters or more details, please contact us with your requirement. light-duty caster ...