This is 4-Pack compatible HP 501A / 502A 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 Q6470A, Q6471A, Q6472A, Q6473A compatible toner cartridges.