Unresponsive Yoyo Dare To Do is an unresponsive yoyo, use an unresponsive bearing. You need to do some tricks to get it come back. Great for more advanced "sleeper" tricks. Excellent Performance YoyoMade of alloy aluminum by CNC Numerical control lathe, anti-corrosion, stable and sturdy, you can play yo-yo string tricks very well. It's a professional yo-yo Anodizing surface treatment make this professinal yoyo ball never fade and not easy to be scratched. It's a great intermediate yoyo. Undersized YoyoDiameter: 52MM. Width: 40.16MM. Shaft width: 4.45MM, great for daily carry. But it's quite heavy for the size, because of how rim weighted it is. This makes it very stable and comfortable to play with. Slightly heavier weight made the yoyo has great balance and longer spinning time, too. Nice and Funny GiftTHIS yo yo toy is an ideal gift for your kids and friends. It's funny and educational. TIPS1.This is an unresponsive yo yo, which means you need to do some tricks to get it come back to your hand. It would not return automatically like responsive yoyo.2.Age: For 8 years old up. 3.Yo-yo string should be changed periodically when yoyo string becomes defect, it will helps you play better.