Feature:
1. Lightweight: The bicycle chain tightener is made of high-strength aluminum alloy with lightweight design, wear-resistant and anti-corrosion.
2. Bright Color: Not easy to fade, more beautiful. Effectively prevent the chain from falling off the frame and damaging the frame surface.
3. Applicable To: The split zipper adopts CNC technology, which is mainly used to adjust the chain tightness for folding bicycles.
4. Easy to Install: Easy to install without complicated tools. Suitable for all bicycles.

Specification:
Origin: Mainland China
Main material: Aluminum alloy
Product color: Black, Red, Gold, Silver (optional)
Product size: About 36x20x12mm/1.41×0.78×0.47inch
Net weight of product: About 10.3g