HIGH QUALITY: Made from high quality bearing steel, these bearings have low noise and long service life.GOOD PERFORMANCE: Built-in precise mini bearing provides smooth running and long service life. Low speed, elegant performance and high stability.DOUBLE SHIELDED: This Thin Ball Bearings is designed with double sealed shielded to protect the bearing from dust, water and foreign matter or any possible contaminants invasion.EASY TO INSTALL: These Sealed Thin Section Ball Bearings are designed with a very thin wall for easy installation and use, and they are usually used for applications where space limitations are of the utmost importance.MEET YOUR DIFFERENT NEEDS: There comes total 10 pieces miniature bearings which you may use for many different projects, perfect for machinery, apparatus, electro-mechanical, toys, doors and windows and etc.Model: 6901-2RSBore diameter: 12mm / 0.47inOuter diameter: 24mm / 0.94inThickness: 6mm / 0.23inColour: silver, blackMaterial: bearing steel, rubberPackage Contents:10 * Deep Groove Ball Bearing (6901-2RS)Only the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.