This is a compatible replacement for the Canon 6448B001 (CLI-251XL) high-yield black ink cartridge. It is designed to deliver up to 660 pages, making it a cost-effective choice for your printing needs. The cartridge features a brand new chip that allows you to monitor your ink levels accurately. Please note that while this cartridge is compatible with various Canon printers, it is primarily used for color printing, and you will need the PGI-250XL pigment black cartridge for standard black text printing. Backed by our 100% Quality Satisfaction Guarantee.