A hollow endodontic instrument having: a file axis； a proximal end； a tip； and a shaft portion between the proximal end and the tip； wherein the shaft portion defines a hollow void at least partially bounded by a plurality of fingers and a plurality of longitudinal spacings, each finger extends from the proximal end and includes an outer surface and an inner surface extending between longitudinal opposing walls； and wherein a portion of at least one of the longitudinal opposing walls includes a cutting edge.
