... .4mm(3/32"~2")Plastic Balls Introduce, The most common applications include plastic bearings and rollers, ball bearings for furniture, micro-pumps ... used for sliding fittings of tables and drawers, furniture bearings, rollers, valves and electronic components, sailing boat fittings ... Polymide,PA)is used in check valves, light load bearings, knobs and toggle switches and other applications where low ...