Bearing Steel Ball: 1\Material:GCr15.GCr15SiMn,bearing steel 2\Diameter:15.875mm-152.00mm 3\Grade:G10-G1000 1)strong anti-wear resistance 2)bearing ball good quality used in bearing 3)high precision,good surface1)materia:(AISI E52100, 100Cr6, SUJ2)+(SUJ3, 100CrMn6…)2)Size:1/32",1/8",1/4",3/16",5/16" ,5/32" ,3/8"and so on3)Grade:G104) Producing standard:GB308-20025)Feature: Good wearing, excellent ...