Ceramic Balls, Ceramic Bearings, Thin Section Bearings manufacturer / supplier in China, offering High Precision Ceramic Bearing 3.969mm Si3n4 Ceramic Ball, 2mm 3mm 4mm 5mm 6mm Si3n4 Silicon Carbide Bearing Ball Sic Ceramic Balls, 3/16" 4.763mm Silicon Nitride Ceramic Balls G5 Used in Bearing, Valve, Linear Slider Si3n4 4.763mm Ceramic Balls and so on.