... ,RNAO, RNA, HJ,BR,NCS,MR, etcC) Drawn Cup Needle bearingHK, BK,TA,TLA,F,FH,SN,MF,MFH,MFH,SCE,BCE,SCH,BCH ... ,BA,B,BH,M,MH,HK...OH,etcD) Drawn Cup Needle Roller ClutchesHF,HFL ... ,RC,FC,FCB, etc5 Material: chrome steel1.Needle Roller Bearings NA6908 Features: 1) High strength ...