reflective series product,colorful light bicycle spokes.The distant direct light back to the light refraction principle according to the Light,day or night reverse have good Optical effects of radiation,Itself has the color,and in the night under the condition of light scattering,in effect,reflecting the body color of light ,so that the vehicle can easily find existence of the rider,reflecting good warning action.This product has 6 different colors ,the safety warning also show colorful cycling life,it is a very good decorative ornaments and night .Uses: To be used in the bicycle spokes, give a strong reflection under the light irradiation by the the electric torch or car at night. Play a security role.No batteries, can be used for a long time, and rain are available.Color: As shownMaterial: Abs tube+ colorful reflective coating filmInner Dia.: 1.8-2.5mmLength: 75mmOuter Dia.: 5mmNote: This is reflective strips (not light bar, couldn't light itself), will be reflective in the light irradiation and give a security warning Couldn't luminous if you ride in the dark without light Package included:36pcs reflective tube in a packNote:Light and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.