3 cartridges Greenbox 61XL Black Inkjet Compatible cartridges are specifically designed for use with HP DeskJet printers, including models 1000, 1050, and 3000. This high-quality inkjet cartridge set offers reliable printing results with a 1-year manufacturer warranty. The black color and compact dimensions make it easy to handle and store, while the compatibility with various HP DeskJet models ensures versatility in your printing needs. Trust the Greenbox brand to provide consistent and professional-quality prints for all your printing requirements.