Specifications : 1) good quality with low price 2) we are the factory of manufacturing ... PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm-100mmPP,PE,HDPERoll on ball,Bearing ball,Ball valve, ... packagingGlass roll on bottle10ml,25ml,30ml,40ml,45ml,50ml,75ml,80mlGlassCosmetic packagingPlastic roll on bottle6ml,30ml,40ml,50ml,60ml,75ml,120mlPPCosmetic packaging Nylon Balls