... Partially Knurled Outer Ring .Metric, HF-KFR Series Drawn Cup One Way Clutch / Needle Roller BearingsPlastic Springs, Partially Knurled Outer Ring, ... characteristic with the torque-transmission characteristic as a shole. It can greatly save the space.Other product listDrawn Cup One Way ... HF, FC, RC, HFL, FCB, RCB, DC SeriesSprage Type One Way Clutches: BB, TSS, TFS, B SeriesDrawn Cup Needle Roller ...