... G1000 2.high precision 3.Hardness:HRC58-62 1/4 ,G20 chrome bearing steel ballschrome bearing steel ... ball1)material:AISI52100 GCr152)Size:1/8",1/4",3/16",5/16",5/32", ... wearing, excellent surface quality and high hardness.7)Using:1. General industry for automobile, motorcycle, bicycle manufacturing, special ... .0251.35-1.65100CrMn60.90-1.050.5-0.71.00-1.20≤0.03≤0.0251.35-1.65Packing We ...