... ,bearing cages,copper,nickle plated retaining rings for shaftsbicycle steel ball retainer1.steel ball specification: 1)material:AISI 1006, AISI 1008 ... .7)Using:1. General industry for automobile, motorcycle, bicycle manufacturing, special bearings & micro – ball for the electronics industry. 2. High ... . High - speed, low noise special bearing 4. Ball valves for liquid and gas ect 7/32" Series steel ...