Needle bearing 1.competitive price 2.prompt delivery 3.OEM and warranty service 4.less friction ... etc. 1. Model: LZ series, HK SERIES, BK SERIES, HK-RS SERIES, BK-RS SERIES, FFH SERIES, MFH SERIES, FY SERIES, MFY SERIES, HF SERIES, HFL SERIES etc 2. Materials: GCr15, GCr15SiMn ...