Sanitary cleaning ball Technics: Forged Size range: 1/2"--8" Material: Stainless Steel ... (Mainland)Material grade: 304, 316L, Seal(Gasket): EPDM, SILICON, VITON, PTFE , Material grade: 304, 316L,Seal(Gasket): EPDM, SILICON, VITON ... , PTFE ,Size range: 1/2",3/4",1", 1.5", 2", ... .We will be in your service any time. Sanitary cleaning ball