HouseOfToners Compatible Ink Cartridge Replacements for Canon PGI-250XL (4 Black) and CLI-251XL (2 Black, 2 Cyan, 2 Magenta, 2 Yellow, 12-Pack) All cartridges have a new chip to show accurate ink levels when installed in your printer (please note per Magnuson-Moss Warranty Act, using after-market cartridges will not void your printer's warranty). Contents: 12PK Compatible Canon Ink Cartridges - 4-PGI250XLBK, 2-CLI251XLBK, 2-CLI251XLC, 2-CLI251XLM, 2-CLI251XLY Page Yield: PGI-250XL Black - 500 Pages each, CLI-251XL Black, Cyan, Magenta, Yellow - 660 Pages each, (page yield measured at 5% page cover of standard 8.5x11 sheet) | Shelf Life: 12-18 Months We ship within 1 business day via USPS First Class, USPS Priority, or UPS Ground | 1-Year Replacement Policy Works in the following printers: PIXMA Series: PIXMA iP7220, PIXMA iP8720, PIXMA iX6820, PIXMA MG5420, PIXMA MG5422, PIXMA MG5520, PIXMA MG5522, PIXMA MG5620, PIXMA MG6320, PIXMA MG6420, PIXMA MG6620, PIXMA MG7120, PIXMA MG7520, PIXMA MX722, PIXMA MX922