??????Dual Function Yoyos Professional???: Magic yo-yo K2 with replacement KK unresponsive yoyo bearing, dual function yoyos.Replace it with a U type bearing by yoyo removal tool, and it will becomes an unresponsive yoyo. You will need to learn a trick called a "bind" to bring the yoyo back. Suitable for advanced players and professional players. ??????Responsive Yoyo For Kids???: When you receive the yoyo K2, yo yo K2 are responsive yoyo. Responsive yoyo for kids or yoyos beginner to play, it???s good for beginner to practise basic string tricks likes: 1A 3A 5A, just a gentle tug on the string, it will return your hand easily. ??????High Quality Material ???: MAGICYOYO K2 plastic yoyo professional is made of high quality PC, durable, not easy to break and get scratch. Crystal purple and pink gradient crystal color, more beautiful and popular. Yoyo k2 crystal yo-yo is safe for kids to use. ??????Best Gift For Kids Yoyo???: Yoyo ball can cultivate kids???imagination, creativity, rapid reactionability, motor skills and eye-hand coordination. Yoyos is great Birthday, Thanksgiving, Christmas gift for your families boys / girls / adults or friends etc.