Pack of 50 Neodymium N48 Magnets.
Neodymium magnets are made from an alloy of neodymium, iron and boron. They have excellent magnetic properties and are extremely strong for their small size. Neodymium magnets are permanent and have a high maximum magnetic energy. Adding these magnets gives a very subtle yet fulfilling feel to the cube. It makes the cube more stable while smoothening corner-cutting and other attributes of the cube.