1)Full Refillable Ink Cartridge Replace For PGI-250XL CLI-251XL 2)Include 6 colors (Black x 1pc,PG-Black x 1, Cyan x 1pc, Magenta x 1pc,Yellow x 1pc, Yellow x 1pc) 3)With Auto Reset Chips 4)The Ink Cartridge can be refilled again and again. 5) Compatible for printers : Canon PIXMA ip7220 / ip8720 Canon PIXMA MG5420 Canon PIXMA MX922 Canon PIXMA MX722 Canon PIXMA IX6820 Canon MG5520/MG5620 Canon MG6420 Canon MG6620