Rollei Rolleiflex 6006 Magazin 220 6x6 Film Back for SLX & 6000 Series
This is the 220 film back for the Rollei SL and 6000 series cameras that shoots 6x6 format. I do not know whether or not it will work with 120 film.
*Note that 220 film is no longer widely available.
It is in good condition with moderate wear and works perfectly.