Features: Plastomer pulleys enhances fun and safety, quiets down, and provide comfort. Good quality bearing, smooth sliding and wear-resistant Component tires, durability and reliability. Tires with wear-resistant properties suitable for children's twisting car and sliding shoe, suitable for various ground. Children and teenagers who love outdoor activity and sports such as family scooters, scooters enthusiasts. Outdoor skating activity, skateboarding areas, or areas with community or school fitness equipment on flat road. Specifications: Color:Nine Choices Dimension:6.0×4.5cm/2.36×1.77in Component:PU Package Includes: 4pcs skateboard wheel note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.