... plastic roll on ball and caps 2)size and color are available 3)bottle with caps plastic roll on ball and capsWe are ... such as PP,PE,ABS,POM,PA, PMMA,and the toleranve can be 0.01mm.2.hollow ball ... in the cosmetic packaging ,such as perfume bottles and deodorant bottles ,also can used in sewage disposal ... the industry of bearing.4.plastic roll on bottles,glass roll on bottles.capacity:10ml,30ml,45ml,50ml, ...