Replaces the Following Manufacturer Numbers: 6452B001 CLI-251XL 6517B001 CLI-251. Compatible with the Following Printer Models: 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.