Great way to touch up frets during string changes.
Rubber eraser that is impregnated sanding grit. Conforms to frets to give a nice rounded profile.
You get one of each 180 grit and 400 grit
These are a new item and work very well to get a nice fret shape since these will take slightly rounded shape while sanding. The 400 grit will leave a dull finish that is easily polished with #0000 steel wool.