At the exhibition Konečně spolu Petrohrad gallery is represented by Matěj Al-Ali and Tomáš Moravec, who invited two related artists Jana Bernartová and Petr Dub. The project named 17 items deals with the possibility of collective collaboration and with installation limits within the frame of a collective exhibition. The goal of the project was to create an object consisting of four authors’ components that were created separately, without notion about the shape or size of other parts of the work. The connecting piece, that gained more points though a democratic vote that other proposals (in our case a double-faced screw), became both the material and the formal criteria for connecting the collective artifact on the opening day.