This is the standard Mamiya 120 film back for the 645 Pro, Pro TL and Super cameras.
Note:
This back and insert will NOT fit the Mamiya 645AF system
It comes with a 120 film insert that provides 15 exposures; It will also accept a 220 insert for 30 exposures
This back has a dark slide which, when inserted, allows you to change film backs mid-roll and also has a safety catch which prevents accidental removal of the dark slide when the magazine is detached from the camera
In addition, it has an ISO film speed dial which will communicate the film speed to the camera body when coupled with the optional AE Prism Finder
A dark slide pocket, and memo clip are also included