Genuine GI-21 Pigment Ink Tank designed specifically for select Canon MegaTank printers. Pigment-based ink formulation for sharp text and vibrant images on plain paper. Specialized ink bottles created for each color to fit and fill compatible MegaTank printers easily! Device Types: Inkjet Printer; Color(s): Black; Supply Type: Ink; Market Indicator (Cartridge Number): GI-21.