We are a professional manufacturer of miniature bearings, the main production are metric and inch bearing.list deep groove ball bearings , stainless steel bearings , flange bearing , unidirectional needle bearing , flat thrust ball bearings , spherical plain ball bearings of various types , with diameter from 1-12mm, outer diameter below 30mm . precision from ABEC-1 to ABEC-7. famous for high rotational speed, high precision, low friction, low noise, low vibration and long life