Okay, these LED flash wheels are seriously cool - they light up as you roll, making you the center of attention, especially when skating at night. Each set comes with 4 wheels featuring bright LED lights that activate automatically while you skate (no batteries needed, which is super convenient). Made from durable 90A hardness PU material, they give you great grip while ensuring smooth rolls and solid wear resistance. You can choose from multiple sizes - 60mm, 62mm, 64mm, 68mm, 70mm, 72mm, 76mm, or 80mm - to fit most inline skates for both kids and adults. The copper coil construction and high magnetic soldering iron mean these babies are built to last through plenty of skating sessions. They're not just for looking awesome either - the flashing lights actually make you more visible and safe when skating after dark. Perfect for recreational skating, hockey, artistic skating, or just cruising around the neighborhood. They even work on caster boards and luggage! Great gift idea for beginners or experienced skaters who want to add some flash to their ride. Each wheel comes with bearings included, so you can install them right out of the package and start glowing immediately.