... ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm-100mmPP,PE, ... ball,and so onRoll on ball and holder8mm, 10mm,19.05mm,25.2mm,25.4mm,29mm,35. ... 2mm,35.56mmPE,PPCosmetic packagingGlass roll on bottle10ml,25ml,30ml,40ml,45ml,50ml,75ml ... ,80mlGlassCosmetic packagingPlastic roll on bottle6ml,30ml,40ml,50ml,60ml,75ml,120mlPPCosmetic ...