For platinum, stainless steel, exotic plastics, and other hard to file materials. The hardest surface known -Rockwell hardness 72HRc. Better performance on hard-to-file surfaces. Little or no clogging; a simple knock is enough to remove the chips. Highly resistant to corrosion. Longer life than standard files.

***CLICK ON PICTURE TWICE TO EXPAND! CLICK ON PICTURE ONCE TO GET FULL DESCRIPTION BEFORE ORDERING.***