This Pack Contains: 1 x high capacity black 6443B001 ink cartridge - 1,228 pages 1 x high capacity black 6431B001 ink cartridge - 523 pages 1 x high capacity cyan 6444B001 ink cartridge - 725 pages 1 x high capacity magenta 6445B001 ink cartridge - 720 pages 1 x high capacity yellow 6446B001 ink cartridge - 747 pages High Capacity Manufacturers Code: PGI-550PGBKXL, PGI-550BKXL, PGI-550XL, PGI550XL, PGI 550XL, 6431B001, CLI551XL, CLI-551XL Canon PGI-550PGBK XL High Capacity Pigment Black Ink Cartridge (6431B001) 523 Pages Canon CLI-551BK XL High Capacity Black Ink Cartridge (6443B001) 1,228 Pages Canon CLI-551C XL High Capacity Cyan Ink Cartridge (6444B001) 725 Pages Canon CLI-551M XL High Capacity Magenta Ink Cartridge (6445B001) 720 Pages Canon CLI-551Y XL High Capacity Yellow Ink Cartridge (6446B001) 747 Pages