Features: <br>1. These bearings are made of high quality steel for low noise and long service life. <br>2. They are double-sided rubber sealed to avoid contaminants entering and save lubricant. <br>3. This section bearing feel smooth, low noise, long service life. <br>4. Suitable for motor, toys, model, instruments and meters, electric tools, communications equipment, fitness equipment and other fields. <br>5. There comes total 10 pieces miniature bearings which you may use for many different projects. <br> <br>Specification: <br>Condition: 100% Brand New <br>Item Type: Ball Bearings <br>Inner Diameter * Outer Diameter * Thickness (mm): 20*37*9mm, 30*47*9mm, 35*55*10mm (optional) <br>Cage and its materials: Steel Plate <br>Use characteristics: High Speed <br>Uses: General <br>Number of rolling body columns: Single Column <br>Raceway type: Deep Groove Raceway <br>Bearing material: Bearing Steel <br>Rolling body type: Ball <br>Angle: 15 degrees <br>Sealing cap: Double-sided Seal <br>Rolling body: Steel Ball <br> <br>Package List: <br>10 * Ball Bearing <br> <br>Note: <br>1. Please allow slight error due to manual measurement. Thanks for your understanding. <br>2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.<br>1、These bearings are made of high quality steel for low noise and long service life. <br>2、They are double-sided rubber sealed to avoid contaminants entering and save lubricant. <br>3、This section bearing feel smooth, low noise, long service life. <br>4、Suitable for motor, toys, model, instruments and meters, electric tools, communications equipment, fitness equipment and other fields. <br>5、There comes total 10 pieces miniature bearings which you may use for many different projects.