... ,000pcs product name specificationmaterialapplication solid ballsize:3.5mm--55mmPP,POM,PA(NYLON),PC,ABS,PE,HDPE and so onUsage:for ball bearing ... ball,and so on hollow ballsize:9.5mm--100mmPP,POM,PA(NYLON),PC,ABS,PE,HDPE and so on Usage:floating ball ...