1. Material: copper, silicone bandage, nylon plastic
2. Applicable models: suitable for bicycles with a handlebar diameter of 22-31.8mm
3. Dimensions: 4.5 x 6 cm
4. Weight: 34g/piece
5. Small size, convenient travel
6. Loud sound, safe riding
7. Waterproof material, anti-corrosion and durable
8. Using elastic silicone straps, tool-free installation