This headband can replace the filmy headband that is used in the Koss GMR-54x-ISO headset. for the Blank HeadBand, supports are needed under the band inside of the half-circle. On the second one supports should not be need needed (have not printed without supports yet.) - 3 walls - cubic infill 30% - 0.2 mm layer height - 0.4 mm nosal.