• Made of quality steel material, with nickel-chromium treatment, high temperature resistance, corrosion resistance, no deformation, providing long-term durability
• High precision teeth ensure close connection with bicycle hub for smooth rotation and easy maintenance
• The hollow design reduces weight and makes your riding easier
• Use it to directly replace your old or broken flywheel. Easy to install
• A wonderful accessory for most road bikes

Specification:

• Material: steel
• Teeth ratio:
• 11-12-13-14-15-17-19-21-23-25T 265g (for road bikes)
• 11-12-13-15-17-19-21-23-25-30T 306g (for road bikes/folding bikes)
• 11-13-15-17-19-21-23-25-28-34T 308g (for road bikes/folding bikes)