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The HP 21 Black Inkjet Print Cartridge combines patented ink formulations with advanced inkjet print cartridge technology to ensure crisp, laser-quality black text every time you print. Pigmented black inks provide crisp sharp text for your letters and reports-documents you can be proud of from your HP printer. Keep your documents for a long-term reference. Printed text from this HP ink remains dark and sharp longer. Results you can count on across a broad range of plain papers and specialty media. Print greeting cards, homework assignments, letters, e-mail, and reports with confidence.
We have this product listed as compatible with the following printers, you can click on any of the printers below to see all of the other products as well.