Canon BCI-11 Black Ink Tank for the BC-11e Cartridge.

• Replaceable BJ Black Ink Tank for the BC-11e cartridge (which comes with two replaceable BJ tanks - the BCI-11 Color ink tank and the (this item) BCI-11 Black ink tank). If you run out of ink, you can replace either of the tanks without having to replace the cartridge. Compatible with: BJC 85, BJC 80, BJC 70, BJC 55, BJC 50.