1.The magic yoyo can cultivate the imagination creativity rapid reactionability motor skills and eye-hand coordination. 2.With the standard production the K1 yoyo uses the whole copper axis to ensure good condentricity. 3.Equipped with the side shaft so that it looks more attractive and has more excellent performance. 4.8 ball KK bearing the magic yoyo will keep balance when in rotation and it runs in a fast speed.Clear pattern and it doesn"t paint off.Specifications:Material: ABSWeight: 65 gAge: 8 + (primary players)Diameter: 5 1.03 mmWidth: 4 1.01 mmGap Width: 4.38 mmBearing: Concave bearingBearing Size: 6.35 mm * 1 2.7 mm * 4.76 mm(C)String Trick: 1A 3A 5AStringLength: 110 cm / 4 3.31 inPackage List:1 * K1 Yoyo, 1 * String, 1 * User Manual