Fingertip top -- \"Hand \"in English spinner

This little gadget, which has a bearing symmetry that turns over your finger, has been gaining popularity in North America since early 2016. Why is that? It mainly comes down to the fact that as long as it holds the spindle in its hand, it can rotate at high speed for a long time. Many people think this product can help them quit smoking! Relieve adhd, obsessive-compulsive disorder, anxiety syndrome, post-traumatic stress disorder and so on! It also helps with meditation and has a calming effect!