Premium 0338C001AA (CLI-271XL) Magenta Ink Cartridge fully compatible with the Canon PIXMA MG5720, MG5721, MG5722, MG7720, MG6820, MG6821. The use of compatible supplies does not void your printer warranty. (0338C001AA, CLI-271XL, CLI271XL, 0338C001, CLI-271XLM)