This is 4-Pack compatible / remanufactured HP 504A toner cartridges. 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. Contains 1 each HP CE250A HP CE251A HP CE252A HP CE253A compatible toner cartridges.