The Canon PFI-121M is a magenta pigment ink tank for selected Canon imagePROGRAF printers. Its manufacturer part number is 6267C001AA, identifying this cartridge variant.
With 130 mL of ink, the tank is a consumable for the printing workflow. Canon describes the ink as specially formulated for selected imagePROGRAF printers.
It is listed as compatible with Canon imagePROGRAF TM-250, TM-350 and TM-355 printers, supplying magenta ink for printing on these models.