2 pack of Hardened 3/16" diameter Diamond coated files. These are used for sharpening Carbide chainsaw chain. You get a total of 2 files per order. These work great in the field when having to sharpen a carbide chain on the fly. 

 

Carbide-tipped saw chains were specifically developed for longer cutting life, resulting in less frequent sharpening. Carbide chains cuts up to 3 times more wood then conventional chain before filing is needed. Suited for cutting dirty or treated wood, roots, frozen logs, stumping ,ice, and extreme hard wood!