This invention is directed to a composite structure of a screw and a tool or driver therefore, which, when brought together in the ordinary manner of presenting a screw driver to a screw, will cause the two to become securely united.
This invention is directed to a composite structure of a screw and a tool or driver therefore, which, when brought together in the ordinary manner of presenting a screw driver to a screw, will cause the two to become securely united.
