Supply Hardness 1mm 2mm 3mm 4mm 4.5mm 5mm 5.5mm Chrome Steel Carbon Steel Stainless Steel Ball Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：Bearing Metal Ball Small Size Tiny Iron Ball 6.35mm Carbon Steel Balls for Skates, Roller Conveyors 1.044G Next：6.95mm High Hardness Diameter Carbon Steel Ball / Cemented Carbide Balls for Agitators, Sliding Rails 1.369g
