Our 3x3 Cube with tough tiles and a smoother mechanism that we decided to give the same treatment to our 4x4. The new 4x4 is slicker, faster and more robust due to the all new design. 
Our 3x3 Cube with tough tiles and a smoother mechanism that we decided to give the same treatment to our 4x4. The new 4x4 is slicker, faster and more robust due to the all new design.