Size - Diameter: 70mm, width: 24mm, bearing diameter is 8mm. Perfect for most inline skates, casterboards, skateboards. Please check that they are compatible with your inline skates before purchasing. High-Quality Material - These inline skate wheels are made of highly elastic and wear-resistant PU, which can absorb vibrations and shocks better, and are less prone to cracking. It can also provide excellent grip so you can ride safely without worrying about slipping. Applications - Perfect for beginners, these skate wheels provide a smooth and easy ride indoors or outdoors. Suitable for daily training, entertainment, skating competitions, figure skating. Package Includes - With eight replacement wheels, exactly in line with the needs of a pair of roller shoes, it meets your needs extremely well. High-tech elastic material makes movements easy and silent. Perfectly suited for daily indoor training, recreational skating, extremely practical and useful. Color: Black Material: PU + Metal Package contents: 8 * Inline skate wheels Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.