... roll on bottle product name specificationmaterialapplication solid ballsize:1mm--60mmPP,POM,PA(NYLON),PC,ABS,PE,HDPE and so onUsage: ... ,track ball,and so on hollow ballsize:10mm--100mmPP,POM,PA(NYLON),PC,ABS,PE,HDPE and so on Usage ... Honest And Trustworthy Enterprise. Product nameSpecificationMaterialApplicationSolid ball1mm-60mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and ...