... factory of manufacturing products. 8mm AISI304HC stainless steel roll on ball1) we are specialize in producing stainless ... and precision.2)the ball is made by 304 stainless steel, and the holder is made by ... ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm-100mmPP,PE ... 4mm,29mm,35.2mm,35.56mmPE,PPCosmetic packagingGlass roll on bottle10ml,25ml,30ml,40ml,45ml,50ml,75ml ...