Key benefits Durable PU wheels designed for pro longboard street skating, delivering longlasting performance. ABEC9 608RS ball bearings with carburising technology provide smooth, efficient rolling in all weather and are dust and dirt proof for a reliable ride. Versatile compatibility across standard skateboards, longboards, regular skateboards, short skateboards, handcarts, and suitcases. materials and design: 60 x 45 mm wheels with 78A hardness for a balance of stability and agility and strong grip. Specifications Material: PU Size: 60 x 45 mm Hardness: 78A Bearings: ABEC9 608RS with carburising technology Applications: suitable for pro longboard street skating and various skateboard types Use scenarios Upgrading a pro longboard for street skating on urban terrain to achieve smooth roll and stable grip. Replacing wheels on standard, regular, or short skateboards to improve cruising comfort and control on campus or in the park. Using wheels on handcarts or suitcases to enhance rolling performance during travel or cargo transport.