The Canon CLI-451XL GY is a high-capacity grey ink cartridge designed for use with several Canon PIXMA printer models, including the MG7540, iP8740, MG7140, MG6340, MG5440, and iP7240. Utilizing dye-based ink and ChromaLife100+ technology, this Japanese-made component ensures that your prints maintain their quality over time. With an ink volume of 11 ml, the cartridge allows you to print up to 780 color pages or approximately 275 photos in a 10x15cm format. This makes it a practical choice for those who frequently print detailed documents or photographs and prefer to replace their supplies less often.