1. The wheels are made of high-quality materials and have an ultra-light design to extend service life and durability, while reducing quiet vibration and wear2. The wheel core is wrapped in fast-rolling, powerful and high-resilient PU, making riding stable and calm.3. The wheels are equipped with our fast rolling and high precision ABEC-9 bearings4. Suitable for most freestyle scooters with 110mm pulleys5. Very suitable for use on wooden floors, carpets, grass, parks and paved roads.Notice:Please check whether the size is applicable before buyingMaterial:Aluminum+pucolour:BlackPackage Contents:2 x Skateboard wheels (with silver bearing)Only the above package content, other products are not included.Note: Light reflection 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.a