Premium Material: This skateboard wheel adopts wear-resistant and strong PU material, provides durable using experience without cracking easily. Size and diameter: 58mm diameter, 32mm width, equipped with ABEC 9 bearings, the inner diameter of the bearing is 8mm, the outer diameter of the bearing is 22mm, please be sure to check the specifications before purchasing. Hardness: 95A hardness, providing a balance of grip and softness, making it suitable for most skaters, especially beginners. It has a non-slip edge that helps go downhill, helping you do tricks better on the street. Suitable for park, street, ramps, freestyle, technical sliding, not recommended for use on uneven ground. 【Wide application】-- Suitable for most standard skateboards, longboards standard, cruiser skateboard, penny board or other hand carts. 【Package Contents】-- Set of 4 white skateboard wheels, just in line with the needs of a skateboard, perfectly meets to your needs.