| Brand: Generic | Color: Silver |
| Size: 6mm balls | Material: Steel |
| Features: This set includes 4 pieces of bicycle rear wheel bearings, each with 6mm (5/21 inch) x 7 balls. Made of high-quality steel, durable, and suitable for bike axle wheel frame bearing replacement. |
| Package Includes: 4 pieces of bicycle rear wheel bearings. Perfect for replacements and spares. Ensure smooth operation of your bike’s drivetrain components. |
| Practical Function: Regularly check and replace your bicycle bearings before cycling or races to maintain optimal performance. Apply lubricating oil before installation. |
| Product Description: Prioritize accuracy and size when purchasing these bike ball crank bearings. The outer diameter is approximately 0.98 inch/25mm, inner diameter is about 0.56 inch/14.5mm, and ball diameter is 6mm (5/21 inch) with 7 balls. |
| Note: Actual item color may vary due to monitor brightness. Manual measurement error may be up to 0-3mm. Some grease on the bearing is normal for protection. |
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