Feature:1. 608 Bearing: Made of high quality carbon steel, durable, glossy bearing surface, bright color.2. Multifunctional: It has the characteristics of uniform hardness and wear resistance, high temperature resistance, strong load resistance and long service life.3. High Performance: Stable rotation speed, low friction, low noise, high working efficiency, and not easy to get hot during the process.4. Wheel Material: Made of high elastic and wear resistant PU material, which can better absorb vibration and shock, and is not easy to break. It also provides excellent grip for safely skating without fear of slipping.5. Suitability: Perfect for beginners, it can ride easily and smoothly indoors or outdoors. Suitable for daily practice, entertainment, skating competitions, artistic skating.Specification:Item Type: Skate WheelsProduct Name: PU, Carbon SteelFeatures: Good Shock Absorption, Strong Grip, Not Easy To Slip, Wear Resistant, ComfortableScope Of Application: Children's Roller Skates, Ladybug Twist Cars, Children's Trolley Cases, Etc.Package List:4 x Bearing2 x Wheel