This sale is for a mint condition Fuji GX680 6x7cm Insert for the Roll Film Holder type III N, suitable for use with all GX680 cameras fitted with a type III back.
This mask converts your standard 6×8 III N back to a 6×7 back. If you are shooting 6×7 rather than 6×8, you need this. Very hard to find. I also have 6×7 focusing screens available to use with this mask, and I also have 645 and 6×6 screens and masks in stock.
This mask has absolutely minimal signs of use, and comes with the original Fuji box and storage pouch.