1.360 ° Reflection - Bicycle spoke mirrors provide 360 ° reflection. Therefore, your visibility has been improved, whether in dim light or at night, as long as you are illuminated by the headlights, you will be seen! 2. The clip is made of 3M Scotchlite reflective material. Its design is to maintain a strong grip, allowing the clip to be installed on it for a long time, and the reflectivity can also be well maintained! 3. Quick and Easy Installation - The reflector can be quickly and easily installed on common bicycle spokes. 4.36 piece set - includes 36 spoke reflectors, suitable for all spokes of your one wheel! 5.You just need to secure the clip to the spoke and maintain a distance of 0.78 inches to 1.18 inches from the rim!