bicycle parts australiaMajor product: Low carbon steel ball AISI1010-1020 , Middle Carbon Steel Ball AISI1045, AISI1065High Carbon Steel Balls AISI1085 Material:AISI 1010-1015, AISI1055, AISI1085Grade Available:G200, G500, G1000Hardness:HRC60Size Available:1/8”, 5/32”, 3/16”, 5/32”, 7/32”, 1/4”, 4mm, 5mm,..