Auger Bit File
For sharpening auger bits and indispensable for many other tasks around the shop. One end is toothed on the face, with safe (untoothed) sides. The other end is toothed on the sides only. This avoids damaging surfaces adjacent to those being filed. 8 inches (20.32cm).
Nicholson, who made this file for many years, recently discontinued it. The only substitution we were able to find is made in India, and happily is of very good quality.