... .Good depth of parallelism 5.High wear-resisting ModelBlack PU coated conveyor rollerBrandKamidMaterialPolyester,Polyether, Urethane imported from GermanyDimensionPer drawing or requestColormore ... than 30 colors or per requestHardnessShore 5A~ 95ATemperatureup to 80°CHub MaterialAluminum, Steel, Sintered Bronze, Brass, Bearing, Many PlasticsBearing ChoicesBall ...