G10 High Precision Chrome Steel Ball Gcr15 52100 100cr6 0.5mm-300mm Shandong Xinpai Steel Ball Manufacturing Technology Co., Ltd. Base Info Description Pre：High Precision Chrone Steel Ball 1/2 13.494mm 15.081mm 16.669mm 17.463mm Next：AISI E 52100 Chrome Steel 50mm Steel Ball Bearing
