♥When a current is passed through the coil, a magnetic field is generated around the coil. This additional magnetic field can generate an external force to the upper permanent magnet, or push or suck. ♥By adjusting the magnitude and direction of the current flowing through the coil, the force can be adjusted to generate Stable magnetic suspension. ♥Made of high quality material, thus it is durable. ♥Magnetic Levitation Coil ONLY, other accessories demo in the picture is not included.