10pcs Double sided Flanged Ball Bearing High Speed Deep groove Steel Bearing (F603-ZZ 3*9*5mm) Features: 1. These bearings are made of steel for low noise and long service life. 2. They are double-sided sealed to avoid contaminants entering and save lubricant. 3. This section bearing feel smooth, low noise, long service life. 4. Low frictional resistance and high speed.  5. With Stable characteristics, high reliability.  Specification: Condition: Item Type: Ball Bearings Model Inner diameter Outer diameter Thickness F603-ZZ 3mm / 0.12in 9mm / 0.35in 5mm / 0.2in F604-ZZ 4mm / 0.16in 12mm / 0.47in 4mm / 0.16in F605-ZZ 5mm / 0.2in 14mm / 0.55in 5mm / 0.2in Cage and Materials: Steel Plate Use Characteristics: High Speed Uses: General Number of Rolling Body Columns: Single Column Raceway Type: Deep Groove Raceway Bearing Material: Bearing Steel Rolling Body Type: Ball Angle: 15 degrees Sealing Cap: Double-sided seal Rolling Body: Steel Ball Package List: 10 * Ball Bearings Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 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.