Features:[Responsive Yoyo for Beginners] K2 PLUS is one of the top recommended 2 functional entry-level yo-yos.It is an kids yoyo, good for beginner to practise basic string tricks 1A 3A 5A, just a gentle tug on , it will return your hand easily.[Dual Purpose Yoyo - Also Pro Unresponsive Yoyo]Yo-yo K2 is responsive yoyo (slim ), package attached unresponsive .When you move to level, just to change the with (attached), you will a new Unresponsive Yoyo, no need to buy another yoyo, a good value for you. Made of PC, beautiful crystal color, wear-resisting, pollution-free, safe for kids to use.Durable and sturdy.Perfect gift for kids, , beginners, , as Christmas Birthday gift.[IMPORTANT]1.For responsive yoyo mode, if the yo yo do not come back sensitively, it is advised to few lubricating oil or rust-proof oil into the ( the oil inside and outside of the ).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 to bring the yoyo back. Material: PC Color:bluePackage Contents: 1 x yoyo, 1 x ball string.Note: Light and different displays may cause the color of the item in the a little different from the real thing.The measurement allowed error is 1-3cm.