... nameSpecificationMaterialApplicationSolid ball1mm-60mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm-100mmPP,PE ... ,HDPERoll on ball,Bearing ball,Ball valve,Floating ball,and so onRoll on ball ... on bottle6ml,30ml,40ml,50ml,60ml,75ml,120mlPPCosmetic packaging Nylon Balls