10.0mm Soft Carbon Steel Ball AISI1010-AISI1015/Suitable for Motorcycle, Bicycle, Auto Parts, Medical Equipment, Cosmetics Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：Factory Directly Ome Polish Hole Carbon Steel Ball Making 6.9mm 7.937mm Steel Ball with Hole Next：G200 G1000 100cr6 Chrome Steel Bearing Ball/Steel Balls for Bearing 4mm
