A decorative hexagonal object made up of articulated concentric elements. By sliding or rotating the rings, the surface opens into a spiral, creating an optical and kinematic effect. The model is available in two sizes, a more compact one and a larger one, and is designed to be produced with multi-color 3D printing. The large version measures approximately 12.7 cm by 14.7 cm. Ideal as a table décor item, an ornament or a stress-relief object to fidget with