one way clutch bearings 1.HF, HF..KF HF..R, HF..KFR ... 2.High precision,low noise , high speed 3.Oem available One way clutch bearing SpecificationMaterials GCr15_China/(AISI)52100_American/(DIN)100Cr6_Germany(Chrome steel ... ,NSK,KOYO,TIMKEN,SNR,URB,KG,ASAHIPackageTube package(10pcs/tube) ; Single packing(1pc/box)Apllicance Cars,Mill,Mine.metallurgy,plastic machinery ...