What is this? What is it used for?

This is a fingertip gyro, a small toy with a symmetrical load-bearing structure, which can idle on the fingers. It is a new type of object with a bidirectional or multidirectional symmetrical body as the main body and a bearing embedded in the middle of the main body, which can rotate in a plane. The basic principle of this object is similar to that of a traditional gyro, except that it needs several fingers to grasp and pull it to make it rotate.

The so-called decompression is just that when people feel stressed, they relax by playing with the gyro in their hands. In fact, it is the same as playing around with a pen in our hands at school.