SUS 440c Stainless Steel Ball Material 17/32 Inch13.494mm Steel Ball 9cr18mo Shandong Xinpai Steel Ball Manufacturing Technology Co., Ltd. Base Info Description Pre：SUS 440c Stainless Steel Ball Material 17/32 Inch13.494mm Steel Ball 9cr18mo Next：SUS 440c Stainless Steel Ball Material 19/32 Inch15.081mm Steel Ball 9cr18mo
