Mr Hobby Waterproof Cloth File (1000 2000 3000)

This item is a file for modeling use. 

Beautifully fine, waterproof sanding cloths for finishing and polishing your models (for perfect paint jobs; can also be used for polishing vacu-formed parts without damage). Set includes three sheets: 1000 (Pink), 2000 (Light Blue), and 3000 (Ivory) grit. sheets measure 93mm x 210mm.