... ProdSpecificationMaterialApplication 1mm-60mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm ... sewage disposal, and for floating. Solid ball diameter 1mm--60mm, mainly used in the industry of bearing.2) Plastic ... nameSpecificationMaterialApplicationSolid ball1mm-60mmPP,PE,ABS,POM,PA,PMMATrackball,Ball valve,Bearing ball, Roll on ball,and so onHollow ball10mm ...