Cosmos &reg; 4 Sets/48 Pcs Bicycle Bike Cycling Wheel Spoke Reflector Reflective Mount Clip Tube Easy to install and remove, 360 degree reflection for improved visibility Give a security warning in the light irradiation Make your bike more fashionable and shine Size: Length - 3", Outer Dia. - 5mm Package includes 48 pcs spoke reflectors with fluorescence green, fluorescence yellow, blue and red color. 12 pcs per color.