6.65mm Soft Carbon Steel Ball AISI1010-AISI1015 G100 Grade AISI 316 4mm Stainless 0.3mm Steel Ball, Carbon Steel Ball for Bearing Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：7.1mm 5.556mm 6.350mm 7.937mm Soft Carbon Steel Ball G1000 for Bicycle Parts AISI1010-AISI1015 Next：Harden Carbon Steel Ball for Slewing Ring Bearing
