Cyclists, stay safe after dark with these flintronic spoke reflectors! This 72-pack gives you plenty to cover multiple bikes or share with riding buddies. Each reflector is 80mm (3 inches) long with a 1.9-2.4mm inner diameter that fits most standard bike spokes. Made from durable ABS material with reflective coating, these lightweight reflectors won't add noticeable weight to your wheels. The 360° reflective surface makes you visible from all angles, with visibility up to 400 meters when light hits them. Important note: these are reflectors, not lights - they need external light sources to work their magic. Installation is tool-free and super simple thanks to the recessed slot design - just slide them onto your spokes and press until they snap into place. They're easy to remove or reposition whenever you want. Perfect for mountain bikes, road bikes, folding bikes, kids' bikes - pretty much any bicycle with standard spokes. The silver color looks sleek and doesn't stand out obtrusively during daytime riding. Whether you're commuting home after work, enjoying evening rides, or just want extra visibility during cloudy days, these reflectors provide that crucial safety margin that could prevent accidents. Your nighttime riding safety just got a major upgrade with these affordable, effective reflectors that make sure drivers see you coming.