The two spheres are consistent, reducing the data tolerance, thus ensuring the stability of the sphere during rotation, extending the sleep time, and suitable for 1A/3A/5A moves. The unique 10-ball U-shaped shaft adopts high-precision bearings to reduce the functional wear of the yo-yo, and achieve more fancy and action. Using secondary oxidation technology, superb process design, superior performance, matching PC top finger cover is a spherical shape that specifically challenges the top finger. Diameter: 5 5.9mmWidth: 4 2.3mmShaft width: 4.59mmBearing: High precision 10 balls bearingRecycling Sticker: SiliconeSurface treatment: bright surfaceScrew specification: M4 x 16mmMaterial: Aluminum Alloy + ABS Package Contents:1 x YoyoOnly the above package content, other products are not included.Note: Light shooting 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 Our products are made with the splendid quality materials and are designed to provide you with the best possible user experience.