NICHOLSON 01891 FILE,8X5/32 RD CHAINSAW,KNURL CUT,CDD

"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. "