Invis - invisible, again-solvable connection

A rotary magnetic field of the screw device brings the screw inside the link to the rotation. The fine thread screws itself into the screw mounting in the counterpart and guarantees a fixed connection. Invis opens completely new possibilities in the clean-room technology. So system walls can weden flexibly up and again-diminished. Invis is always invisible. Covers belong to the past. The eye may be pleased.