1) 1'' roll on ball with fitment 2) mainly used in cosmetic, deodorant, perfume packaging 3) ... ball diameter10mm100mm, are mainly used in the cosmetic packaging, sewage disposal, and for floating. Solid ball diameter 1mm--60mm, mainly used in ... 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 and ...