Abstract: Flexible strip on which the electrical connectors are arranged at uniform intervals and placed mechanically without the aid of adhesive substances and/or fixing elements. The strip has, at uniform distances, openings in which the electrical connectors are placed; the contour of the openings is studied so as to ensure simple and reliable containment of the connector and an equally easy and immediate extraction thereof. The contours blanked in the flexible strip are mostly provided, at their ends, with oppositely arranged protrusions that face the mostly circular openings of the connectors in order to retain them. Other mostly circular openings are blanked in the flexible strip at a constant pitch, mostly alternated with the openings for positioning the electrical connectors, and are used for the traction and positioning of the strip in the apparatus for automatically fixing the connector to the electrical conductor.