1. Easy to install, not easy to rust
2. CNC precision machining, high hardness, wear-resistant and durable
3. Smooth speed change, one-piece molding
4. Using high-strength aluminum alloy to reduce weight, improve strength and rigidity, strong force, not easy to break
5. Vacuum plating, anti-oxidation, vacuum plating forms a special protective film to prevent surface oxidation
6. Material: aluminum alloy
7. Universal for mountain/road flywheels