CACUSN Magnetic Cube with Competition for and Intermediate with World Standard Color and Stand Standard Color Scheme Built-in Magnets, M4.0, Cube,

[Built-in Magnet] CACUSN M-series cubes have built-in magnets, so even if you use an incomplete amount of force, the magnetic force assists and ensures smooth rotation. The M4.0 model has just the right amount of magnetic force, making it recommended for experts. It's inexpensive for a cube with a built-in magnet, making it a great value for the money. [Competitive and Educational Use] For competitive use, we recommend the CACUSN M4.0 magnetic cube, which is stable and easy to rotate. It's a fully functional magnetic cube that can be used for competitive play, but it also makes a great gift for children and can be used as an educational toy. [Smooth Movement] The internal structure has been improved, making it smooth to spin and a pleasure to play. This magnetic cube has been refined to a level suitable for competitions, with a focus on precision. [Adjust the hardness to your liking] The center of the cube is a lid, and when you open it, you'll find a screw. By tightening or loosening this, you can freely adjust the spinning feel to suit your skill level. Magnetic cube [built-in magnet]