NABA File 100/180

100/180 grit file, coarse file parallel, for polishing egdes or diagonals The advantage of the wave form is that straight and round forms are on both edges, so the usable surface is larger, which prolongs its lifetime, there is no dead area. Besides the form and coarseness, also durability is important for files, as grits will disappear from files sooner or later, and they will not be usable. NABA files take the lead in durability as well, they are made of Japanese and Korean quality sandpaper, the grit cover is put on in 3 steps, so when the first layer wears down, there are 2 more left.