Genuine OEM HP Color Copier 120 Ink and Supplies
A black twin-pack for the Color Copier 120 contains two HP 45 cartridges, not black and color ink together. The HP 41 tri-color cartridge is a separate supply. That distinction matters if you're ordering a pack expecting it to cover both kinds of ink.
Toner Buzz carries genuine HP 45 black and HP 41 color ink for this copier. Choose the single HP 45 for one black cartridge or its twin-pack for an extra black supply; add HP 41 when you need color ink.