Precision Polishing Industrial Zirconia Ball Ceramic White Zro2 Bearing Ball 5.556 mm Zibo Roshine Ceramic Technology Co., Ltd. Base Info Description Pre：Bearing Silicon Nitride Si3n4 Zirconia Bead Zro2 Ceramic Balls for Ball Mill Machine Next：2.381-31.75mm AISI304 /316/316L/420/440/440c Stainless Steel Ball G100-G1000
