Material: AISI 1010-1015, AISI 1055, AISI1085 size : 5mm Grade : G200, G500, G1000 Certification: ISO 9002: 2000 Bicycle Steel Ball ItemBicycle steel ballMaterialAISI 1010-1015, AISI 1055, AISI1085Size1/8 , 5/32", 3/16", 7/32", 1/4", 4mm, 5mm, 6mmGradeG200, G500, G1000HardnessHRC60ApplicationCycle industryPlackingBulk packing,pounch packing,plastic/tin box packingCertificationISO 9002: 2000Place ...