This is 4-Pack remanufactured/compatible Ricoh MP C2503 toner cartridges. Includes 1 each 841918 (black) 841921 (cyan) 841920 (magenta) 841919 (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.