If your looking for a great file this is it. It removes wood almost as fast as a rasp but leaves no gouge marks to clean up.
Any details or information on the file you are referring too?
Mine is a ten incher with curved teeth.
I use the Nicholson #50 and #49 rasp 49 for the rough stuff and 50 for the fine stuff
I have both the 49 and 50 as well.