Genuine OEM HP Color Copier 210 Ink and Supplies
The HP 45 choices for the Color Copier 210 differ in pack size: one black cartridge or a twin-pack of two. The twin-pack gives you another cartridge for a later change, rather than extra ink inside a single cartridge.
At Toner Buzz, you'll find genuine HP 45 black ink in both formats. The individual cartridge suits a one-cartridge order, while the HP 45 twin-pack includes a second black cartridge to keep on hand.