Threaded Steel Ball with M3 M4 M5 Hole for Oilers Andgreasers 8.731mm 9.525mm 12.7mm Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：Chrome Bearing Wrecking Carbon 6.75mm Iron Forged Steel Grinding Ball Mill for Mining 6.350mm 8.731mm 9.525mm Next：Stainless Steel Ball with Hole Drilled Steel Ball for Special Valves Ball Transfer Units 12.7mm 19.05mm
