Feature:1. It can cultivate the imagination, creativity and rapid reactionability2. Responsive and Unresponsive modes Transformed: Yoyo with Flat Bearing for Beginners, and with replaced Concave Bearing become Unresponsive Yo-yo for the Advanced player3. High quality made of high-grade aluminum ,which make it very smooth and comfortable to hold in hand4. It can be as the first Yoyos gift for Kids, also be an advanced Yo-yos for the Child, Younger, Adults who are passionate in yo yo tricks game5. For 8 years or up. Nice way to keep the Boys/ Girls off the Internet and off from the sofa in front of the televisionSpecification:This is one of the most popular children's toys nowadays! Yoyo ball. But this is just more than that! It's even suitable for adults. It's made of high quality aluminum alloy material and feeling good in your hand.Features:It can cultivate the imagination, creativity and rapid reactionabilityResponsive and Unresponsive modes Transformed: Yoyo with Flat Bearing for Beginners, and with replaced Concave Bearing become Unresponsive Yo-yo for the Advanced playerHigh quality made of high-grade aluminum ,which make it very smooth and comfortable to hold in hand It can be as the first Yoyos gift for Kids, also be an advanced Yo-yos for the Child, Younger, Adults who are passionate in yo yo tricks gameFor 8 years or up. Nice way to keep the Boys/ Girls off the Internet and off from the sofa in front of the televisionSpecification:Item No.: T9Body Material: Aluminum+Plastic Weight: 67g Diameter: 51.5mm Width: 39.6mm Gap Width:responsive model: 3.38mmunresponsive model: 4.73mmStyle: String Trick (1A, 3A, 5A)Suitable for: Age 8 upPackage Information:Package size: 11 * 6.2 * 4.8cm / 4.3 * 2.4 * 1.9inPackage weight: 107g / 3.8ozGift box packagePackage List:1 * Yoyo Ball3 * String1 * Replace Bearing1 * ScrewPackage List:1 * Yoyo Ball3 * String1 * Replace Bearing1 * Screw