This set contains five films (36 exposures) wound on a central spool and one normal conventional film in a cartridge, which can be opened. The idea is that you shoot the film in the cartridge first. After this you can re-use the cartridge again by loading a film on a spool into the same cartridge. For loading the cartridge you need a perfectly dark room or a change bag.
1x Foma Fomapan 400 135 (36 exp), 5x Fomapan 400 (36 exp) on spool Made in Czech Republic