SUS 440c Stainless Steel Ball Material 17/64" 6.747mm Steel Ball 9cr18mo Shandong Xinpai Steel Ball Manufacturing Technology Co., Ltd. Base Info Description Pre：SUS 440c Stainless Steel Ball Material 1/4 Inch 6.35mm Steel Ball 9cr18mo G10 Next：SUS 440c Stainless Steel Ball Material 9/32 Inch 7.144mm Steel Ball 9cr18mo
