Setting tool, milling cutter for insulation boards for quick and secure fastening of the ECON® Iso + appliance junction box (art. no. 1159-55) and ECON® Styro55 (art. no. 1555-51). The subsequent installation of electrical connections on an already completed, insulated façade is a challenge. With the SPECIAL cutters, installation openings can be created without weakening the thermal insulation system, as insulation is only removed at certain points.