Save time and money when you buy an HP 950 Twin Pack. Advanced, HP inkjet print-cartridge technology gives you consistently outstanding results in Hewlett-Packard 251dw, 276dw MFP, 8100 - N811a, 8600 - A911a, 8600 Plus - N911g, 8600 Premium - N911n, 8610, 8615, 8620, 8625 and 8630. HP printers, inks and papers are designed and tested together for optimal results. HP proprietary inks prevent printhead corrosion and clogging for optimal print results. Highlight black text on printed documents without worrying about smears so it's great for projects and everyday prints. Each cartridge yields approximately 1,000 pages.