The two spheres are consistent, reducing the data tolerance, thereby ensuring the stability of the sphere during rotation, extending the sleep time, and suitable for 1A/3A/5A action.The unique 10-ball U-Shaft adopts high-precision bearings to reduce the functional wear of the yo-yo and achieve more fancy and action.Using secondary oxidation technology, exquisite craft design, superior performance, the matching PC top finger cover is specially designed to challenge the spherical shape of the top finger.Diameter: 55.9mmWidth: 42.3mmAxle width: 4.59mmBearings: High precision 10 ball bearingsRecycled Stickers: SiliconeSurface treatment: glossyScrew Specifications: M4 x 16mmMaterial: aluminum alloy + ABSPackage Contents:1 x YoyoOnly the above package contents, excluding other products.Note: Different lighting and display may cause the color of the item in the picture to be slightly different from the actual item. Measurement tolerance is +/- 1-3cm