I have for sale a number of triangular machine files made in Sweden by Sandvik/Oberg. They are new old stock.
A photo can be seen here.
I believe these were originally for use in a saw filing machine. But they will work just fine in a die filer. I use them in my Oliver.
The files are triangular with a corner radius and are 5" in length. They are packed in boxes of 10.
I am asking $40 per box plus shipping. There are a number of boxes available.