Description: Our product are used in bicycle spokes, giving a strong reflection under the light irradiation by the the flashlight torch or car at night. Play a security role. No batteries, and can be used for a long time no matter sunshine or rain. You are worth it. Hope you enjoy your riding. Features: 1. Made of high quality ABS tube material, which is very durable and lightweight. 2. Give a strong reflection under the light irradiation. 3. Easy to install and remove. 4. 360 degree reflection for improved visibility, make your bike more fashionable, and enhances safety by increasing visibility at night and during bad weather conditions. 5. This product has 3 different colors, it is a very good decorative ornaments and night protective equipment. Specifications: Material: ABS Tube + Reflective coating film Package Weight: approx. 43g Length: approx. 74mm / 2.91" External Diameter: approx. 5mm / 0.20" Inner Diameter: approx. 1.8-2.5mm / 0.07"-0.09" Quantity: 2 bags(12pcs per bag) Package Included: 2 x bag of bicycle wheel reflectors Note: 1. This is reflective strip(not light bar, couldn't light itself), will be reflective in the light irradiation and give a security warning. Could not luminous if you ride in the dark without light. 2. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please in kind prevail. .