This is a multipack of original Canon PGI-2500XL ink cartridges. These cartridges have been made by Canon to work hand in hand with your Canon Maxify printer.
The PGi-2500XL black cartridge can produce up to 2,500 pages, the cyan can produce up to 1,755 pages, the magenta can produce up to 1,295 and the yellow up to 1,520 pages before you will need to replace them so they're ideal for office use.
The ink inside the cartridge is a pigment based ink, this type of ink is design to sit on the top of the page rather than sinking in like a dye ink. This means your prints will be sharper and brighter, which is great for printing text and presentations.