Set of bicycle , length 75 mm, packaging 72 pieces. Easy to install and remove, Give strong reflection under the light irradiation.^Reflector clips consists of a high quality ABS tube bright reflective film and the principle of direct light return to light according to the principle of light source refraction. No battery required, can be used for a long time.^Wheel reflective tube can flexibly adjust to any position on the spokes and you can adjust it as you like. 360 degreen reflection make your bike visisble at night and keep you away from the potential dangerous.^6 colors: red, blue, white, orange, yellow, green. Bicycle spoke are very good bicycle accessories and night protection gear.^Note: These are reflective strips (not a light bar, cannot illuminate themselves) that will reflect in the light irradiation and provide a safety warning. Couldn't glow when riding in the dark with no light^