... 2.)we can do all kinds size of ball and roll on bottle product name specificationmaterialapplication solid ballsize:1mm--60mmPP,POM, ... ,track ball,and so on plastic roll on bottle 50ml,75ml PP,HDPE,PE cosmetic package glass roll on bottle10ml,25ml,30ml,45ml,50ml ... ,25.4mm,29mm,35.2mm,35.56mmPE,PPCosmetic packagingGlass roll on bottle10ml,25ml,30ml,40ml,45ml,50ml,75ml,80mlGlassCosmetic packagingPlastic ...