Features Made of premium steel material, corrosion resistance and rust resistance. Exquisite mechanical design makes little noise when rotating. Fine workmanship, smooth surface, excellent mechanical properties. High accuracy, stable performance, long service life and high reliability. Deep groove raceway with single column ball bearing ensures the efficient operation of steel balls.​ Package list: 10 * Bearings Features:  1. Made of premium steel material, corrosion resistance and rust resistance. 2. High accuracy, stable performance, long service life and high reliability. 3. Deep groove raceway with single column ball bearing ensures the efficient operation of steel balls. 4. Exquisite mechanical design makes little noise when rotating. 5. Fine workmanship, smooth surface, excellent mechanical properties.   Specification: Model: F687-ZZ/F689-ZZ (Optional) Size: F6800-ZZ: ID: 10mm, OD: 19mm, Thickness: 5mm F6801-ZZ: ID: 12mm, OD: 21mm, Thickness: 5mm Material: Bearing steel Rolling element type: Steel ball Column number of rolling element: Single column Raceway type: Deep groove raceway Angle: 15° Sealing cap: Double-sided seal Package List