GUB CX-18 31.8mm Aluminum Ultralight Bicycle Seat Post Clamp(Black)

1. Aluminium alloy material.
2. Long service life. Convenient design, simple installation.
3. 31.8mm clamp fit for 27.2/28.6mm seat post.
4. Features: fine processing, fine-tuning screw design.
5. Anti-rust, corrosion resistance.