Z Gear Shift Cube 2x2 TWISTY PUZZLE
The Gear Shift cube consists of eight corner pieces that are all cogs. Four corners have large gears with 8 teeth, the other four have small gears with 5 teeth. The corners are arranged such that every pair of adjacent corners is one large gear interlocked with one small gear. Therefore when you twist one corner, all large gears twist in one direction and all the small gears in the other.
You can also pull apart the puzzle along any of the three axes so that the gears of two opposite faces become independent systems. In this way you can twist the four interlocked gears in any face independently of the rest.
This cube comes wrapped in cellophane and is not in a box.