This is 4-Pack compatible / remanufactured HP LaserJet M652 M653 M681 M682 toner cartridges. Includes 1 each CF450A (black) CF451A (cyan) CF453A (magenta) CF452A (yellow). 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 monebut also provide a high quality product to ensure long term customer satisfaction.