4x10mm Full Ceramic Ball Bearing Si3N4 4x10x4mmFull Ceramic Ball Bearing Silicon Nitride 4mm x10mm x4mm Full Ceramic Ball Bearing, measures an inner diameter of 4mm, 10mm outer diameter and the width is 4mm, a standard bearing size commonly used in a variety of industrial and commercial applications, Bearing is made from Ceramic. 4x10x4 Ball Bearing Full Ceramic Ball Bearing Balls: Si3N4 Ceramic (Silicon Nitride) Cage Material: PTFE (Polytetrafluoroethylene) Inner outer races: Si3N4 Ceramic Inner
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