This is 4-Pack compatible Okidata C612 toner cartridges. Includes 1 each 46507504 (black) 46507503 (cyan) 46507502 (magenta) 46507501 (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.