Made in Japan and sold by Lee Valley, these finger files allow you to shape wood in tight places, and being smaller than a full-sized file, they might offer a bit more control.
The coated stainless steel files have a medium-fine tooth pattern that can cut quickly and evenly in all directions, yet still leave a smooth finish. The edges of the files don’t have teeth, so you’ll only remove the material you want. Forget about your file card too; these files supposedly resist clogging.
The 3-3/4″ long files come in convex straight, convex tapered, v-groove, flat tapered, and flat straight shapes. Individual files are $7, or you can buy the whole set for $30.
Finger Files [Lee Valley]