a.k.a. Void Skewb
Designed by Tony Fisher, purchased from Mefferts 2010.
(plastic, 2.2 inches)

In the theme of the Rubik 3x3x3 Void Cube, same as the Skewb but without the centers, so that one can look through the center of the cube along any of the three axes (i.e., a square bar can be passed through the cube in any of the three directions).