... of Origin 3.Certificate of ISO9001:2 Good quality ZWZ Linear motion, guide bearings LK1630Prducts nameLinear motion, guide bearingsBra0nd nameBYB SKF ... HCH HRB ZWZ TMB TWB C&USeries 7000 series,7200 series ,7300 series ,7405 series,71800 series,71900- seriesID size5 mm - 1350 mmCage materialSteel , brass ...