This is 4-Pack compatible Xerox WorkCentre M24 toner cartridges. Includes 1 each 6R1153 (black), 6R1154 / 6R1155 / 6R1156 (cyan / yellow / magenta). 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.