ZTTO 1246HY Steel+Aluminum Cassette for Mountain Bike 12 Speed Bike Flywheel Cycling Replacement Part

• The flywheel is made of high-quality materials, has good wear resistance and fatigue resistance, and can maintain stable transmission performance during high-intensity riding
• The flywheel is made of lightweight materials, making the entire bicycle lighter and more comfortable
• The flywheel is suitable for a variety of terrains and riding scenarios, whether it's urban commuting or outdoor adventures

Specification:

• Teeth Rate: 11-46T
• Material: Steel+Aluminum
• Teeth Rate: 11-13-15-18-21-24-28-32-36-40-46T