But not any old saw blade. This one is special and goes on in place of the line drive and spool on the Stihl line trimmers, or weed wackers as some like to call them. Came in the mail yesterday from my friend at the Outdoor Power place I use. Have a bunch of second growth Maple trees growing up on the edge of the pond dam and along a fence row. They do not belong or are wanted in either place so they get cut off and the Cordon treatment.