2" 50.8mm AISI S-2 Tool (Rockbit) Steel Balls LUOYANG ZHISHENG STEEL BALL LIMITED LIABLITY COMPANY Base Info Description Pre：1 7/8" 47.625mm AISI S-2 Tool (Rockbit) Steel Balls Next：1/8" 3.175mm AISI S-2 Tool (Rockbit) Steel Balls
