... products. 1) We are specialize in producing plastic balls. Hollow plastic ball diameter10mm100mm, are mainly used in the cosmetic ... 1mm--60mm, mainly used in the industry of bearing.2) Plastic balls are made of different materials, such as ... -60mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm ... forward to receiving your order! 5.5mm plastic bearing balls