Fowler's Hardness Tester File Set is an inexpensive, easy-to-use method for determining material hardness by sliding the file cross the object's surface.
- Six color-coded files indicate hardness from 40 to 65 HRC.
- Conveniently packaged in a leather-like case with a velcro lined flap
- The files are approximately .157" in diameter and 7" in length (4.30 x 175mm).
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