This is a set of curtains made by the FED factory for the FED-5 series cameras.
The curtains fit all FED models, from FED-1 to FED-5.
These curtains were also successfully used as a replacement for the Zorki cameras. Original Zorki curtains are a bit wider (by less than 1mm), so there is enough margin in the FED curtains to work. More attention is needed to center the curtains during installation in a Zorki.
The curtains are new, original spare parts.