Thrust roller bearings and needle bearing thrust washers (AXK AXW NTB TC AX AS LS ... ZS TRA TRB TRC TRD 811 812 893 GS WS) thrust roller ... assemblies(k, k...zw, knl, kzk, kbk) Entity bushed needle roller bearing(RNA, NK, NA, NKI, NKS, NKIS, NA...RS, ... : 5~150mm Material: Chrome Steel GCr15.HRC58-62. Quality: INA Standard Packing: Individual Box