A flappable plug connector and a complementary receptacle connector are provided wherein the plug connector defining a mating tongue, is made with a pair of insert molding housings which are associated with the contacts thereof, commonly sandwiching a paddle card therebetween with a pair of power contacts exposed on two opposite lateral sides to form a sub-assembly. The component is introduced into a system environment and adapted to this system environment andor initialized with this system environment as a system, in that the variant of the system environment is determined. A first seam may be sewn through the overlapping region, the first seam being in shear stress when the airbag module is inflated. The surface adjacent to the blade tip is inclined at a greater angle to the hub axis than the surface adjacent to the hub. Also described are devices comprising calibration phantoms; methods of using these devices; methods of formulating databases containing information regarding x-ray images; the databases themselves; and methods of manipulating the information and databases.