MAGICYOYO Y03 Professional Yoyo Alloy 8 Ball U Bearing Lightweighted Yoyo for Amateurs Beginners Professional Players Gift for Kids Boys With high concentricity, the can spin for a long time. It's designed for both amateurs and professional players.  Features:  Size: diameter: 56mm; width: 44.5mm; gap width: 4.5mm.  Exquisite craftsmanship: With high concentricity, the can spin for a long time. The anodic oxidation surface feels comfortable and the vivid color will not fade.  Unresponsive: It's an unresponsive yo-yo. You need to learn a trick called a bind to bring the yoyo back.  Body design: The side streamline V shape design can reduce the friction between the string and ball to the largest extent. It enables players to make fancy tricks.  Lightweight: You can enjoy the pleasure brought by the flexibility and high speed of this lightweight ball. For beginners, it can also reduce finger load and the damage of the impact on fingers effectively.  Specifications:  Product name: MAGICYOYO Model: Y03-Hertz  Shape: Color: blue/orange/purple&black Diameter: 56mm Width: 44.5mm Gap width: 4.5mm Body Material: alloy 6061  Weight: 63.5g Package information:  Size: 5.8*5.8*4.7cm Weight: 70g   Package list:  1*  1*string  1*instruction