Speed Cube Review - Fun fact: the Rubik's connected magnets are very easy to replace. N35 4x2 give a much nicer feel. Still strong but not crazy strong. | Facebook
4 x 4 Pillowed Puzzle Cube by V-CUBE | SeriousPuzzles.com
Amazon.com: Rubik's Tower, 2x2x4 Complex Color-Matching Puzzle Travel Problem-Solving Cube Challenging Brain Teaser Fidget Toy, for Adults & Kids Ages 8 and up : Toys & Games