Crescent Nicholson 7.81" American Pattern Round Knurl Cut Chainsaw File

The Crescent Nicholson round knurl-cut chainsaw file features an American pattern. For optimal results, position the file against the beveled cutting surface of the teeth at an angle of 20 degree - 45 degree relative to the saw and file from the inside to the outside of the cutter. Sharpen all left-hand cutters on one side of the chain, then proceed to the other side to file all right-hand cutters. The height difference between the cutting teeth and the depth gauge should be between 0.02 inches