EndoVac MicroCannulas 25MM, 20/pk. Irrigation evolved. EndoVac is a true apical negative pressure irrigation system. Microcannula Utilizes Negative Apical Pressure. Used to pull irrigants down the root canal. Applies suction rather than injection. Cleans the entire canal system. EndoVac2 Tubing uses suction power to draw irrigants down the root canal system and towards the Hi-Vac suction unit for total cleaning. By plugging directly to the blue port of the MPA, the Master Delivery Tip (MDT) facilitates the steady flow of irrigants without risking overflow.MDT is used during coronal flaring and post instrument changes to remove debris.