This is 4-Pack compatible Xerox Phaser 6000 toner cartridges. Includes 1 each 106R01630 (black), 106R01627 / 106R01628 / 106R01629 (cyan / magenta / 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 money, but also provide a high quality product to ensure long term customer satisfaction.