I use the discontinued Kodak 2422 aerographic direct duplicating film. It works well once you figure out how to use it and process it. It comes in 9.5 inch or 5 inch rolls. I have seen the rolls in a variety of lengths, mine are 500 feet long. I have a life time supply in sub 0 deep freeze.
I first bought it from mrfoto. Then when I went to buy more his web site was not working and I finally gave up and did a WTB in a few places and found some. You need to find the film that has been frozen in storage. It goes bad in room temp and it was discontinued quite awhile ago. When it goes bad it loses it's dmax.
The 2422 direct duplicating film is one step. Negative to negative on an enlarger with red safe lights.