Diansheng are continuing to make excellent magnetic big cubes, they first released the 8x8x8 after nearly a whole year of teasing it and now they have released a 9x9x9. These magnetic big cubes are the only magnetic 8x8x8 and 9x9x9s mass produced and far far smaller than other giant cubes currently on the market, if you have any desire to practice these cubes then you need to buy the diansheng ones. Buy it here