SUS 440c Stainless Steel Ball Material 6.5mm Steel Ball 9cr18mo Shandong Xinpai Steel Ball Manufacturing Technology Co., Ltd. Base Info Description Pre：G10 AISI52100 Chrome Steel Balls for Rolling Bearings 11.1125mm 7/16" Next：SUS 440c Stainless Steel Ball Material 8.0mm Steel Ball 9cr18mo
