... low noise 4. high precision 5 Bearing steel, carbon steel or accordign to customer Needle roller bearings/ one way clutch ... sizes, which are appropriate for different applications. StructureNeedle roller bearingSeriesK, NA, NKI, RNA, NK,etcCageChrome steel, ... inspectionrust preventionrust preventionproduct packingContact us:Company Name: Yantai Runlong Bearing Co., Ltd.Street Address: No. 117, Zhichu ...