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
