... roll on ball with holder are available 1) We are specialize in producing plastic balls. Hollow plastic ball diameter10mm100mm ... mainly used in the industry of bearing.2) Plastic balls are made of different materials, such as ... 29mm,35.2mm,35.56mmPE,PPCosmetic packagingGlass roll on bottle10ml,25ml,30ml,40ml,45ml,50ml,75ml, ... forward to receiving your order! 10mm plastic roll on ball with holder