1. Hardness: 82A for durable grip, whether on a skate, sidewalk or in the street. 2. Performance: smooth, comfortable and durable, allowing you to find more pleasure. 3. Usage: Suitable for double row skating and skateboarding, roller skates. Suitable for many occasions, indoors, outdoors, on asphalt, in parks. 4. Material: Made of PU and PP, durable, the light is bright and does not fade. 5. Tips: The bearing must be pressed tightly for the product to emit light, otherwise it will not emit light. 6. Features: 82A Hardness: Gives you a durable grip, whether on a skate, sidewalk or on the street. High performance: smooth, comfortable and durable, allowing you to find more pleasure. Usage: suitable for double row skating and skateboarding, roller skates. Material: Made of PU and PP, durable, the light is bright and does not fade. Occasions: suitable for many occasions, indoor, outdoor, asphalt road, park. 7. Features: Material: PU+PP. Color: white. Dimensions: approximately 5.8 x 3.2 cm (diameter x width). Bearing: high speed 608RS. Core: LED light. Hardness: 82 A. Application: double roller, skateboard. Resistance: 80%. 8. Content: 4 luminous wheels. 9. Note: 1. Due to the lighting and individual monitor settings, the item's color may be slightly different from the pictures. 2. Measurements are taken by hand, the dimensions indicated may vary by 0.5-2 cm.