Aluminum alloy material, lightweight and flexible, with more stable shock resistance and drop resistance, using aluminum alloy 6061 material The two spheres are , reducing data tolerance, thereby ensuring stability during the rotation process of the spheres and extending . The 1A/3A/5A technique is suitable The ball arm gradually forms a V-shaped tilt near the center axis to reduce friction, making the ball idle for The 10 bead U-shaped shaft adopts high-precision bearings to reduce the functional wear of the yoyo ball and achieve more tricks and movements Superior performance, matched with a PC top finger cover, is a spherical shape specifically designed to challenge the top finger Diameter: 55mm Width: 42mm Shaft width: 4.59mm Bearings: high-precision 10 Recycling sticker: yellow silicone Surface treatment: bright surface Screw specification: * 10mm Colour:black+purple Material:aluminum alloy Package Contents: 1 set x yo yo 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.