Runstar High Precision 8*28*9mm 638 Single Row Miniaute Deep Groove Ball Bearing Metric Bearings  638zz  638-2RS Zhangzhou San Xin Min Trading Co., Ltd. Base Info Description Pre：Runstar High Precision 8*24*8mm 628 Single Row Miniaute Deep Groove Ball Bearing Metric Bearings  628zz  628-2RS Next：Runstar High Precision 9*14*3mm 679 Single Row Miniaute Deep Groove Ball Bearing Metric Bearings F679 679zz F679zz 
