Unused in original plastic sleeves (not shown). Each measures about 4 x 1/2 x 1/4". Used by mechanics and tool and die makers to impart the correct edges in their work, but could have a wide variety of sharpening applications. Made in USA.
Includes the following:
- MF-44 □ Norton India Medium Abrasive Square File
- MF-144 △ Norton India Medium Abrasive Triangular File
- MF-244 ○ Norton India Medium Abrasive Cylindrical File