2 - 1000pcs PP Solid Plastic Balls Precision Bearing Ball 2mm 2.381mm 3mm 3.175mm 3.5mm 3.969mm 4mm 4.5mm 4.763mm 5mm to 38.1mm
https://www.vogueparade.com/shopping/EN/42/1/1005003351601841/2-1000pcs-pp-solid-plastic-balls-precision-bearing-ball-2mm-2381mm-3mm-3175mm-35mm-3969mm-4mm-45mm-4763mm-5mm-to-381mm//