5.3mm Polished and Mirror Stock 6.0mm Tolerance G5 K20 Hard Carbon Steel Balls 0.607g Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre:AISI1010-1015 High Quality Carbon Steel Balls Chrome Steel Balls 5.6mm for Bearing with Cheap Price 0.716g Next:0.690g Special Price Solid Carbon 5.35mm Carbon Steel Ball AISI1010-1015 AISI 1045 AISI 1085 G10-G2000