High Quality Tungsten Carbide Ball for Oil with Good Price Stainless Steel Ball 3.969mm 5/32 Inch 6.350mm 9.525mm Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：High Hardness 1.2mm 1.4mm 1.5mm 2mm 3.175mm 6.35mm 7.144mm Tungsten Carbide Steel Ball Next：8mm 8.5mm 10mm 14mm 17.5mm 18mm 19.05mm High-Density Tungsten Carbide Ball 11.113mm 7/16" Hard Alloy Tungsten Steel
