This is pack of 2 YOSTAR K2 PLUS CRYSTAL Responsive Yoyo for Kids Beginner. Included YOSTAR K2 Sky Blue + YOSTAR K2 Pink As an excellent responsive yoyo for kids, YOSTAR K2 PLUS is not only beginner yoyo for kids, plastic yoyo, but also an professional yoyo, unresponsive yoyo (after changed bearing). Dual Purpose - Entry to advanced level ball-bearing yoyo! 1.Responsive yoyo. This kids yoyo is equipped with responsive yoyo bearing(narrow c), good to practise strings tricks. Just a gentle tug on the string, yoyo will return to your hand quickly. Beginners could play it well. 2.Un-responsive yoyo.You could change the bearing with the bearing remover. Attached with KK bearing & bearing remover. Tips: After changed with KK bearing, it becomes an unresponsive yoyo and will not come back to your hand when you pull it up. You will need to learn a trick called a bind to bring the yoyo back. If string is too long for you, cut it to proper length. There is no "correct" string length, but belly button length is a good guideline. If string got stuck, try as follow: A.Remove the string firstly. B. Check whether the ball is loose or not. The two hemispheres must be tightened well. C. Attach the string properly (The most important thing). Specification Body Shape: Butterfly Weight: 63.3g Diameter: 55.33 mm Width: 42.67mm Gap Width: 4 mm Bearing: Narrow C Bearing Axle: M4*8mm Surface: Shining Finish Style: String Trick (1A, 3A, 5A) Response Pad: Silicon Pad (random color) Twist-Apart String Length: 43.31in / 110cm Package Included 1 x YOSTAR K2 CRYSTAL Sky Blue (Responsive) 1 x YOSTAR K2 CRYSTAL Pink (Responsive) 10 x Yoyo Strings (random color)2 x Yo-yo Bag 2 x KK Bearing (for Unresponsive use) 2 x 10mm Axle 2 x Bearing Remover