I have a similar back manufactured by Shen Hao except mine will also do 6x45,6x6 and 6x9. It is quite a rudimentary device that relies on a window to correctly wind on. However it is well made and does not leak and seems to hold the film flat. From your original post I suspect your camera does not have a Graflock (International) back so unfortunately this will not work. You are limited to backs that can be inserted such as the calumet and Sinar.