Bottom Cartridge Priming Tool is designed for use on the black and tri-color cartridges. This tool helps clear clogged nozzles, draws the inks down to the printhead remove air bubbles and bottom refill. Cartridge clips are also used when refilling and / or for storage of cartridges. For use with Lexmark black & color cartridges: Lexmark 10N0217 (#17), Lexmark 10N00227 (#27), Lexmark 10N216 (#16), Lexmark 10N0026 (#26)