
I use a lot of needle and medium files for Luther work, grinding metal frets and other parts. The brass bristles on these brushes are soft, yet dense enough to easily remove metal shavings that accumulate quickly. And keeping files clean will help minimize tiny scratches on exposed metal. I have a special brass brush for small files but for a comparable price I have 24 of them and they have other uses e.g. B. for electrical work. Good business.