3/8" 9.525mm AISI S-2 Tool (Rockbit) Balls LUOYANG ZHISHENG STEEL BALL LIMITED LIABLITY COMPANY Base Info Description Pre：88.9mm AISI 52100 Chrome Steel Ball/Bearing Ball Next：55sm5fa-60 AISI S-2 Tool (Rockbit) Steel Balls 13/32" 10.3188mm
