Film retriever to pull the film out of the cartridge if you wind it back to far. The only model that we've found that really works. Three plastic "lips" are pushed into the film cartridge, and two of the grab on to the end of the film. When everything works, the three plastic lips and the film end come out of the cartridge together.|
But... so that we don't hear any complaining about it later: it doesn't always work immediately. You need to concentrate, fumble around a bit, rotate the spool inside the cartridge, listen to hear if it clicks, etc. But not to worry, it comes with good instructions.