1) 1'' roll on ball with fitment 2) mainly used in cosmetic, deodorant, perfume packaging ... ,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 and holder8mm ... prices.We look forward to receiving your order! . 25.4mm roll on ball with fitment for cosmetic packing