Unusual object, playful, geometric, the first of the 5 platonic solids: the tetrahedron, it is also the symbol of the planet Jupiter.
This one has been cut in two equal parts which fit and then hollowed out of 4 holes passing by the center (a hollow sphere) and clipped. You can compose your object from a choice of different colors and materials.
Warning !! it is better to choose 2 materials of the same category for a perfect assembly. (example stainless stel have more shrinkage than other materials!)