
Tungsten alloy portable hand spinner is a small toy with a symmetrical bearing structure that can rotate over the fingers. It is composed of a bidirectional or multi-directional symmetrical body as the main body, embedded with a design combination of bearing in the middle of the main body, and the whole constitutes a new type of object with planar rotation. The basic principle of this object is similar to traditional gyroscope, but it requires several fingers to grasp and move…