This is 4-Pack remanufactured/compatible Xerox WorkCentre 6400 toner cartridges. Includes 1 each 106R01316 (black), 106R01317 (cyan), 106R01318 (magenta), 106R01319 (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.