This PowerCleaning Flush system is for use on any Canon printheads that are removable (such as for Canon ip3600 and Canon MG5320). Will not work on Canon ip7220 or other Canon printers in which the printheads are not removable. Connect to any industrial sink (or an adaptor can be purchased to fit your home sink at any hardware store) and the nozzle seals over the jet inlet. Press the trigger to apply positive water pressure to flush the passages. When the water sprays a full fan out the jets you IMMEDIATELY KNOW the passages are TOTALLY CLEAN.