28.575mm 1 1/8" G10 AISI 52100 Chrome Steel Ball LUOYANG ZHISHENG STEEL BALL LIMITED LIABLITY COMPANY Base Info Description Pre：44.45mm 1 3/4" G40 AISI 52100 Chrome Steel Ball Next：31.75mm 1 1/4" G28 AISI 52100 Chrome Steel Ball
