5.4mm 0.210inch Chrome Steel Material and G10-G1000 Percision Steel Ball for Belt and Roller Conveyors 0.642g Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：4.49mm Size and AISI 52100 Material G100 High Precision Carbon Steel Balls for Tumble Finishing 0.369g Next：5.45mm Large Stock and Cheap Price Carbon Steel Ball Bearing Steel Balls AISI1010-1015
