There are many small powerfile machines on the market that take 330 x 10mm belts. They are most commonly used in sheet metal fabrication work and in automotive panel work. Given these applications we have recommended two belts dependent on how much aggression is needed: Use the TZ59 P60 grit where there may also be some weld removal needed. Use the TZ59 P80 grit where it is more about shaping and finishing the metal.