Features:1. Flashing: Luminous flashing roller skate wheels will give you great visual experience. Performs great on wood, concrete and indoor tile, etc. surfaces. Suitable for double-row roller skates, skateboard.2. These skate wheels reduce friction and maximize speed on various types of surfaces. These roller skate wheels work for casual indoor skating or competitive skating.3. Smooth Sliding: These versatile skating wheels roll smooth to help improve the comfort of your ride.4. Safe: Using high-quality bearings, no jamming, fast rotation speed, hub inner buckle design, high-speed rotation is safer.5. Perfectly suitable for daily practice, recreational, artistic skating and hockey skating, extremely handy and practical.Notice:1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement.2. Wheels only, roller skate is not included.Specification:Type: roller skate wheelsMaterial: PUBearing: 608RS bearingSize: 58*32mmHardness: 82ARebound: 80Core: LED lights, other componentsApplication: for double row roller skates, skateboardQty: 4pcs Package List:4 x roller skate wheels