10/20/50/100PCS Precision Solid POM Plastic Ball 2/3/4/4.5/5/6/6.35/6.95/7/8/9/10~28mm Bearings Rolling Bead Polyoxymethylene

10/20/50/100PCS Precision Solid POM Plastic Ball 2/3/4/4.5/5/6/6.35/6.95/7/8/9/10~28mm Bearings Rolling Bead Polyoxymethylene

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