This is 4-Pack remanufactured Dell 331-0719 / 331-0716 / 331-0717 / 331-0718 toner cartridges. Each toner cartridge is manufactured to be comparative to the original in terms of quality and page yield. Extensive testing and R&D have enabled us to produce cartridges that will not only save you money, but also provide a high quality product to ensure long term customer satisfaction.