Abstract: Corkscrew of the type having folding tools (2,3) in a handle (4), such as a screw-type means of insertion in a cork (2) and a fulcrum lever extension means such as counter-lever (3) having a slot seat for crown caps as well, and the additional function of supporting by a notched end on the inside ledge of the bottle's neck together with said means of screw insertion (2), both hinged to one end of the handle at a convenient distance from each other, characterized in that:the handle (4) is in plastic material, andthe fulcrum lever extension means such as counter-lever (3) is of a semitubular form having a slot seat (3") through its back with an undercut to engage a crown cap, and the handle (4) being equipped with a hollow complementary with the slot so as to make it actively usable whether the counter-lever is closed or is completely open in alignment, or nearly so, with the handle (4).