This is the standard 6x7 220 film back for the Bronica GS-1. Be aware that 220 film is no longer widely available, but I have heard of people using 220 backs to shoot 35mm with 3D printed converters.
It is in excellent condition with light wear and works perfectly. The light seals are in good condition and the mechanical functions are smooth.
The dark slide and takeup spool are included.
SKU: 250403-24