Runstar High Precision Extra Thin Section 12*21*7mm 63801zz Series Single Row Miniaute Deep Groove Ball Bearing Metric Bearings  Zhangzhou San Xin Min Trading Co., Ltd. Base Info Description Pre：Runstar High Precision Extra Thin Section 12*21*7mm 63801-2RS Series Single Row Miniaute Deep Groove Ball Bearing Metric Bearings  Next：Runstar High Precision Extra Thin Section 12*21*7mm 63801 Series Single Row Miniaute Deep Groove Ball Bearing Metric Bearings 
