Install this genuine Canon Grey 551 Inkjet Cartridge for unbeatable reliability and quality when using compatible PIXMA inkjet printers. Each Canon CLI-551 cartridge uses Canon FINE (Full Photolithographic Inkjet Nozzle Engineering) print heads for incredible crispness and detail. These print heads, combined with uniquely formulated Canon ink, provide exceptionally long-lasting prints under the Canon ChromaLife 100 system.