Grobet Tuning File
Grobet USA, Made in Italy, Swiss pattern file.
0-Cut is right on the margin between coarse and fine. It's perfect for removing brass with a light touch. It's coarse enough to have power but doesn't leave scratches and tracks on the reed.
Warding shape: Like a flat triangle with teeth on every side.
Raise or lower the pitch of a reed with the reed plate on or off the comb.
This file works on Brass, Stainless Steel and Phosphor Bronze reeds.
For tuning instructions, see This link: http://harp.andrewzajac.ca/Tune