Return Program ink cartridges let you print professional-caliber documents that combine the crisp text quality of a laser with the vivid detail of an inkjet. Pigmented inks deliver rich black text and vibrant color graphics on a wide range of paper types in Lexmark PRO4000, PRO4000C, PRO5500 and PRO5500T. Inks are highlighter-resistant and smear-resistant. Perfect for all of your in-house printing needs. Genuine Lexmark supplies are engineered to work best together with your Lexmark printer, delivering excellent print quality from the first page to the last. Lexmark Return Program cartridges are patented print cartridges sold at a discount in exchange for the customer's agreement to the license requirement that the cartridges will be used only once and returned only to Lexmark for remanufacturing or recycling. Individual ink cartridges let you replace only the color you need. Set includes one each of cyan, magenta and yellow. Each cartridge yields approximately 1,600 pages.