Crescent Nicholson Chainsaw File, 200mm x 4.0 With Cushion Grip Handle - 901716C

"The Crescent Nicholson round knurl-cut chainsaw file with an American pattern. For ideal results, place file against beveled cutting surface of the teeth 20° to 45° with saw and file from the inside to the outside of cutter. Sharpen all left-hand cutters on one side of the chain and move to the other side and file all the right-hand cutters. The height between cutting teeth and depth gauge is between .020"" to .030"" — check the depth gauge height every 2 or 3 sharpening's. Tighten the tension on chain to firmly support cutters when filing."

Tighten tension on chain to firmly support cutters when filing, Place file against beveled cutting surface of teeth 20° to 45° with saw,File from inside to outside of cutter