... price 2) we are the factory of manufacturing products. 8mm POM soild plastic solid bearing ball1) We are specialize in producing ... balls are made of different materials, such as PP,PE, POM, PA,PMMA and so on. The tolerance can be 0 ... ) Honest And Trustworthy Enterprise.Product nameSpecificationMaterialApplicationSolid ball1mm-60mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and ...