[Responsive Yoyo for Beginners]MAGICYOYO K2 PLUS is one of the MAGICYOYO top recommended 2 functional entry-level yo-yos. It is an excellent kids yoyo, good for beginner to practise basic string tricks 1A 3A 5A, just a gentle tug on the string, it will return your hand easily. [Dual Purpose Yoyo - Also Pro Unresponsive Yoyo]Yo-yo K2 is responsive yoyo (slim bearing), package attached unresponsive KK bearing. When you move to next level, just to change the bearing with KK bearing (attached), you will get a Unresponsive Yoyo, no need to buy another yoyo, a good value for you. [Premium Quality]Made of high quality PC, beautiful crystal color, wear-resisting, pollution-free, safe for kids to use. Durable and sturdy. Perfect gift for kids, friends, beginners, family, as Christmas Birthday gift. [IMPORTANT]1.For responsive yoyo mode, if the yo yo do not come back sensitively, it is advised to add few lubricating oil or rust-proof oil into the bearing(add the oil inside and outside of the bearing). 2.After changed to Unresponsive yoyo, it 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. Body Shape: Butterfly Diameter: 55.33 mm Width: 42.67mm space 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,don't accept the specified color.) Twist-Apart String Length: 43.31in/110cm Material:PC colour:blue Package Contents: 1 x bearing puller 5 x ball string (random color,don't accept the specified color.) 1 x storage bag 1 x10mm screw 1 x 8 ball bearing