... nameSpecificationMaterialApplicationSolid ball1mm-60mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm-100mmPP, ... PC,ABS,PE,HDPE and so onUsage:for ball bearing,cosmetic package,industrial ,track ball,and so on hollow ballsize:10mm-- ... on Usage:floating ball,valve ball,sewage ball,cosmetic package,industrial ,track ball,and so on plastic roll on bottle ...