This sale is for one difficult to find, near mint condition Mamiya 645AF 120/220 Insert IN401 for use with any Mamiya 645AF film back.
This insert has minimal signs of use. There are light rub marks on one end plate but otherwise absolutely minimal signs of use. It has been very little used.
Try finding another one – very few of these inserts around and they make a huge difference when shooting film with any Mamiya 645AF / AFD / Phase One 645AF camera. No storage box with this one, sorry.