Abstract: The present invention relates to dentistry, and particularly, to a rotary endodontic finishing file used for root canal treatment. The endodontic finishing file comprises a shank for inserting in an endodontic motor handpiece, and a core of twisted metal braids secured in the shank, the said core being provided with an outer braid made of wire wound over the core. The length of the braid is less than the length of the core. At the braid-free end of the core, a brush of the core braids is formed. The winding of the wire of the outer braid is made in four layers, the winding of the first and third layers is made in the direction from the shank to the brush without a gap between the adjacent coils in each layer, the winding of the second and fourth layers is made in the opposite direction.