ESTON 1 PACK 940 Printhead Replacement for 940 Print Head C4900A For Officejet Pro 8000 8500 8500A 8500A Plus 8500A Premium (Black/Yellow) Package include: 1 Pack Black-Yellow HP940 Printhead For use with officejet pro 8000. 8500, 8500A,8500A plus, 8500A premium All products in ESTON store are strictly tested to perform superb result before delivery, manufactured with ISO9001 ISO14001 certified ,good quality at a good price The nozzle of printhead with polished technology ensure high speed printing and ink flow smoothly Fast delivery, 100% satisfaction guaranteed and 0% risk of purchase, your purchase is covered y 1-year warranty.