YATUNINK Remanufactured for HP 940 Print Head Black/Yellow & Cyan/Magenta Officejet Pro 8000 Officejet 8500 Officejet 8500A Printers (2 Pack) Packing list: Black/Yellow Printhead-1pcs, Magenta/Cyan Printhead-1pcs. The printhead is Non-OEM but they are comparable with the original,Quality is higher than ordinary recycled printheads. Compatible with: Officejet pro 8000. 8500, 8500A,8500A plus, 8500A premium. Our vows: we can provide a guarantee to every customers who purchased our products, once there are any problems, we will make all our efforts to help you and if you don't want to posses it , we can offer you the full refund.