This is 4-Pack compatible / remanufactured HP LaserJet Pro M452 / M477 toner cartridges. Includes 1 each CF410X (black) CF411X (cyan) CF413X (magenta) CF412X (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.