Hardness: 82A for durable grip on skate, sidewalk, or street. Performance: Smooth, comfortable, and durable for enhanced skating experience. Usage: Suitable for double row skating, skateboarding, and roller skates. Ideal for indoor and outdoor use on asphalt, in parks, and other surfaces. Material: Made of PU and PP for durability. Tips: The bearing must be pressed tightly for the product to emit light; otherwise, it will not light up. Features: - 82A Hardness: Provides durable grip on various surfaces. - High Performance: Smooth, comfortable, and long-lasting. - Material: PU and PP construction. - Color: White - Dimensions: Approximately 5.8 x 3.2 cm (diameter x width) - Bearing: High-speed 608RS - Core: LED light - Hardness: 82A - Application: Double roller skates and skateboards - Resistance: 80% Package Includes: 4 luminous wheels Note: 1. Due to lighting and monitor settings, the item's color may vary slightly from the images. 2. Measurements are manually taken and may vary by 0.52 cm.