This is an interesting set of 6 photo-etch moveable barriers that I think will have multiple uses for modelers who build 1.72 modern armor or aircraft or even civilian vehicles or dioramas. In looking at photographs of a number of European airshows, barriers like these show up on a regular basis being used to separate curious spectators from very expensive aircraft.
Construction is very simple, once each barrier has been removed from the fret. I recommend using either a new exacto blade or a set of phot-etch scissors to remove the barriers from the fret as they are very fine and easily bent. Use care and try to nip the attachment points as close to the barrier as possible as they are almost impossible to file or sand once off the fret due to their delicate nature.