<p>An insertion connector (1) is provided for hollow profiled elements (17, 18) of spacers or mullions for insulating glass panes. The insertion connector includes lateral walls (3) and at least one central wall (2) having at least one long opening (9) extending along the longitudinal axis 23) of the connector. At least one holding element (7) projects from the central wall (2). The holding element (7) is arranged adjacently to the through-opening (9). The insertion connector (1) can include other holding elements on the lateral walls (3).</p>
