1. Material: aluminum alloy
2. Specifications: 53T, 56T, 58T
3. Application: folding bike
4. Precise tooth profile, lighter overall
5. Waterproof and rustproof, long service life
6. Aluminum alloy 3D one-piece forging, lightweight hollow structure
7. Waterproof and rustproof, long service life
8. Weight: 140g/145g/165g
9. BCD: 130mm