Inkcool Remanufactured Ink Cartridge Replacement for HP 940 ( Black,Cyan,Magenta,Yellow , 2-Pack ) 1.Packing list: BK/Y printhead-1pcs, M/C printhead-1pcs 2.Shelf Life:12-18 months 3.Fast shipment 4.ISO9001Certified 5.Compatible for HP Officejet Pro 8000 8500w Printers