1、When the wheel rolls, the built-in copper coil and a high strength magnetic iron would work together to provide stable electricity for LED lights 2、Adopts premium LED lights, bright with long service time 3、Excellent elasticity and traction, also resistant to abrasion with great durability 4、6 colors for you to choose, show your personality 5、Ideal accessory for skating lovers Features: 1. When the wheel rolls, the built-in copper coil and a high strength magnetic iron would work together to provide stable electricity for LED lights. 2. Adopts premium LED lights, bright with long service time. 3. Excellent elasticity and traction, also resistant to abrasion with great durability. 4. 6 colors for you to choose, show your personality. 5. Ideal accessory for skating lovers. Specification: Material: Coil: Copper               Magnetic core: Magnetic iron               Light bead: LED               Inner bracket: PP Coil turns: 800 LED beads quantity: 4 Toughness: 90A Size: 80mm / 3.149 inch Color Options: White; Red; Green; Blue; Pink; Rainbow Weight: Approx. 140 g Package Included: 1 * Shining Sliding Skate Wheel