FMFXTR Bike Front Derailleur Clamp Straight Lock Turn to Clamp Converting Seat(Black 31.8mm)

1. Hollow lightweight design
2. High-strength aluminum alloy material, wear-resistant and durable, not easy to rust
3. Non-slip texture, stable and not easy to move
4. Material: aluminum alloy
5. Application: convert from direct lock type to clip ring type
6. Inner diameter: about 31.8/34.9mm