Yusion 3/16"-6" (4.7625mm-150mm) AISI52100 Steel Ball G10-G600 LUOYANG ZHISHENG STEEL BALL LIMITED LIABLITY COMPANY Base Info Description Pre：3/16"-6" AISI S-2 Rockbit Balls (G10-G600 / HRC55-HRC59) Next：Yusion 4.7625mm-150mm AISI52100 Steel Ball G10-G600 (HRC60-HRC66)
