These logic puzzles are so fun! Each 2" cube has a different color on each edge of the cube. Each cube spins horizontally and vertically. The goal is to take a mixed up colored cube, and by twisting, make a single color on each edge. This classic toy is a fun brain teaser that is perfect for downtime, travel, or just a spinning fidget. One of the keys to becoming a fast solver is having the right equipment. The Duncan® Quick Cube™ features smooth, easy turning design to allow the user to "corner cut"; for superior performance and play. No oil needed! See the difference right out of the package. Ideal for novice to pro!