3.175mm 3.969mm 4.763mm 6.358mm 7.144mm 7.938mm 9mm 9.525mm Chrome Steel Ball Guangzhou Decok Steel Ball Co., Ltd. Base Info Description Pre：Suj-2 AISI52100 100cr6 Gcr15 Precision Steel Ball Chrome Steel Ball of Bearing Next：(AISI 1010 / 1015 / Q235 / Q195 / 1045 / 1065/) G200 G500 G1000 Carbon Steel Ball for Bicycles
