Welcome to our store! 1. Non-returning core: Yoyo with U-shaped core, does not return automatically. You must learn the skill of binding for complex tricks, suitable for advanced players. 2. Replaceable core: With T-shaped sensitive core that can be replaced, allowing the rotating Yoyo ball to return automatically. Ideal for beginners and children. 3. Excellent balance: The two half-balls with balanced weight improve the stability of the Yoyo ball, enabling high-speed rotation without vibration. 4. Stylish design: With a cool black design and unique color treatment, the Yoyo will never fade or wear out, making you stand out when playing with it. 5. Perfect gift: Yoyo ball is a great gift for children over 14 years old, suitable for beginners to advanced Yoyo players, ideal for daily practice or competitions. Product Type: Yoyo Ball Material: Alloy Size: Approx. 5.2 x 5.2 x 4 cm / 2.05 x 2.05 x 1.57 in Recommended Age: Over 14 years Includes: 1 x Yoyo Ball 1 x Glove 1 x Plastic Box 1 x Chinese-English Instruction 1 x Replaceable Core 2 x Packaging 3 x Strings Customers are our top priority. If you discover any issues with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best post-purchase service.