... years experience 3.competive price 4.excellent quality Thrust Needle Roller Bearings1. Material: Chrome Steel GCR15 / Stainless Steel / Carbon Steel or ... ( NKIA, KNIB, NKX, NKXR, SL series...) Inner Ring ( IR, LR, LRB series...) Thrust Roller Bearing ( AXK,AS,LS,ZS,WS,NTA, TRA ... Cage assemblies ( K, KT, KBK, KZK, KZW series....) Heavy duty roller bearing ( NA, NK, NKI, NAV, KAO, HJ, BR, BRI series ...