What are those little files called??????

Good day to everyone. I am working on my first frame and brazed the DT-HT last night. I am satisfied with my first braze. Cosmetically there are just a couple small lumps of silver on the tube that need to be filed down. Also, I've read where builders "file the shoreline" to create a nice clean look I'm guessing. I've come across the names of the tiny twisty files used but can't seem to remember what they are called. I've been searching the forums for these files for a little while now but, of course, can't find info on them when I'm actually looking for it. What are they called again?

Also, is it possible to make a file that will work by bending one of those little files you can find near the checkout line at hardware stores?

Thanks for any info!

Rifflers?

Thank you!