30*37*4mm 6706zz 6706z 6706 Zz 2z Z Metal Shields Metric Thin-Wall Radial Single Row Deep Groove Ball Bearing for Model Toy Robot Remote Control Car Machinery Hangzhou Baron Bearing Co., Ltd. Base Info Description Pre：Thin Wall Bearing Zirconia Full Ceramic Bearing 6700 6701 6702 6703 6704 6705 6706 Next：High Quality 6706 6706zz 6706 2RS Thin Wall Deep Groove Ball Bearings ABEC-1 30*37*4mm
