... ball with metal bone 1.Certificate: ISO9001:2008 2.Material: NBR, NR, EPDM, metal, etc 3.Different sizes Product NameRubber ball with metal boneCertificateISO9001 ... hydrocarbons and animal and vegetable oilSizeWe can provide you with many different sizes of rubber ball, according to your ... drawing or samplesMatetialNBR, NR ,EPDM ,SBR ,SR ,CR ,IIR ,etc ...