... Ltd was established in 2003 as professional manufacture of plastic roll on ball and bottle. In 2010 our ... nameSpecificationMaterialApplicationSolid ball4mm-55mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ... -100mmPP,PE,HDPERoll on ball,Bearing ball,Ball valve,Floating ball,and so onRoll on ball and holder8mm ... Jane,welcome to chat with me. 1.4" Plastic Roll on Ball