... of different materials, such as PP,PE, POM, PA,PMMA and so on. The tolerance can be 0.01mm with good surface ... onHollow ball10mm-100mmPP,PE,HDPERoll on ball,Bearing ball,Ball valve,Floating ball,and so onRoll on ball and holder8mm, 10mm,19.05mm,25 ... .2mm,25.4mm,29mm,35.2mm,35.56mmPE,PPCosmetic packagingGlass roll on ...