Material : AISI 1010-1015, AISI 1055, AISI1085 Size:1/8" Grade: G200, G500,G1000 ItemBicycle steel ballMaterialAISI 1010-1015, AISI 1055, AISI1085Size1/8" , 5/32", 3/16", 7/32 ... packingCertificationISO 9002: 2000Place of originalShandong province, ChinaDelivery30 days Factory ProductionPacking Carbon Steel Ball