[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 high quality 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.Body Shape: Butterfly Diameter: 55.33 mm Width: 42.67mm space Width: 4 mm : Narrow C Axle: *8mm Surface: Shining Finish Style: String Trick (1A, 3A, 5A) Response Pad: Silicon Pad (random color,' accept the specified color.)Twist-Apart String Length: 43.31in/110cm Material:PC colour:blue Package Contents: 1 x puller 5 x ball string (random color,' accept the specified color.) 1 x storage bag 1 x10mm screw 1 x 8 ball Only the above package content, other are not included.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.