Stainless Steel Ball Drilled for Floating Devices, Calibration Instruments 2.381mm 3.175mm 4.627mm Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：6.1mm Low Carbon Steel Ball AISI1010-AISI1015 G100 Grade AISI 316 4mm Stainless 0.3mm Steel Ball, Carbon Steel Ball for Bearing Next：Decades Years Experiences Factory of Stainless Steel Ball
