knock down trees (see Ax). Among the many variants proposed by axes and hatchets, the tree tool is characterized by its almost straight blade (not curved), the straight and almost parallel flats of the iron, and the long handle to be utilized with two hands. In addition, the blade usually has two equal chamfers if the ax is to be used hitting the tree alternatively from the right and the left with the worker in the same position. If the worker moves and goes around the trunk, the ax presents two chamfers of different length.