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The Aperture Science Weighted Storage Cube(or Weight and Storage Cube) is a testing element in the Portal Franchise. It is used to activate Super Buttons. It has many variants, both canon and fanon. The most well-known variant is the Companion Cube. Some other variants include the Edgeless Safety Cube, and the Discouragement Redirection Cube. Some buttons can only be activated by Cubes, and some only with Edgeless Safety Cubes. In the older Aperture, a different cube was used. It is unknown what is placed in these cubes, but it is likely something expendable, so that large-scale manufacturing makes sense. However, it is known that the outsuide of these cubes are made of metal, due to the sounds they make.