The Responsive jojo K2 from MAGICYOYO is perfect for beginners and children who want to learn basic string tricks. This durable yoyo is made of high-strength PC plastic, making it drop-resistant and safe to use. The K2 combines a professional spherical design with a fun top finger design, making it suitable for all kinds of professional tricks and fun exercises. In addition, the package includes a non-responsive jojo bearing, allowing it to be converted into a non-responsive Yo-Yo for advanced players. This yoyo also improves finger flexibility and brain responsiveness, enhancing hand-eye coordination. It is the perfect gift for children who want to step away from screens and discover the joy of learning the art of Yo-Yo! The package includes the Responsive Jo Jo K2, a spare bearing, 12 yoyo strings, a disassembly tool, an axle, a mini Allen key, and a bag to store all Yo-Yo accessories. Our customer service is always ready to provide satisfactory service, so please feel free to contact us if you have any questions or concerns.