The Nicholson round chainsaw file features an American pattern. It is precision engineered to provide maximum gram removal per stroke and amazing longevity.

• 6 in. x 1/8 in. size
• American pattern round chainsaw file
• Tighten tension on chain to firmly support cutters when filing
• File from inside to outside of cutter
• Place file against beveled cutting surface of teeth 20 degree to 45 degree with saw
• Sharpen all left hand cutters on one side of chain
• Then move to the other side and file all the right hand cutters
• Check depth gauge height every 2 or 3 sharpenings
• Height between cutting teeth and depth gauge is between .020 in. to .030 in.