Tungsten Carbide Grinding Ball/Tungsten Carbide Balls Bearing for Downhole Motors Tricone Bit Balls Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre：36′′ 201 Half Steel Sphere 304 Mirror Polished Stainless Steel Hollow Ball Carbon Metal Hollow Half Balls Mild Steel Half Ball for Fire Pit 900mm Next：Hot Sales High Precision Tungsten Carbide Alloy Balls 5mm 5.5mm 6mm 6.35mm 6.747mm 7mm 7.144mm
