Abstract: A distributor for dielectric liquid adapted for positioning in the irrigation or degasing round holes of machining electrodes having a body either shaped to obturate the opening or square shaped so as to leave free spaces between it and the walls of the holes. In both versions the body has an axial channel and in the first at least one slot communicating with the channel is provided with the slitted end in the working zone of the electrode. The second embodiment, useful in small electrodes, has a square body whose diagonal length is equal to the diameter of the opening in which it is to be force-fitted with the distribution of dielectric taking place through spaces left between the body and the walls of the opening.