[Gamblat]

Hello,

You don't rewind 120 film. It has a paper backing to protect it. At the end of the roll you crank the lever a few times to ensure the roll is all the way in the take up spool. There is typically a sticker or tape that says EXPOSED you use to keep it from unwinding. You take it out and the swap the empty spool on the left to the right so you can load the next roll.
Hope this helps.

*EDIT* found this video on Youtube:
https://www.youtube.com/watch?v=yDutC1bRuzs

Thanks,

Yes, 120 film has the paper backing and doesn’t rewind — only goes one direction.