This K-24 Fanno was designed by us to: (1) Cut fast; (2) Cut through 20 inch limb as well as 1" limb because the gullets take out the dust: no binding. The teeth are lance teeth and there are 4 1/2 to the inch. The saw can be easily sharpened. The hole in the handle and the curve of the saw help to pull the saw down into the cut. The mib on the handle keeps the hand from sliding up too high and provides a good grip when undercutting.