... steel,AISI 304 steelKeeperstainless steel, PTFE, nylonPrecisionP0-P6QualityISO9001:2000 StandardID 25mmOD 52mmThickness 15mmSeal typeOpen and Seal,Z,RZ,RS,2RS,2RZ,NBall ... /LContact informationFax:86-531-80960792 TEL:86-531-88024066 Website;www.rfdzc.com To:Juliana4.Main ball bearinga).deep groove ball bearingb ...