QINK Combo Set 2PK for 940 Printhead Long-Life Premium BK/Y C4900A C/M C4901A (Printhead 2PK: BK/Y C/M) What's in the box:QINK Remanufactured replacement for HP 940 printhead (1*Black/Yellow + 1*Cyan/Magenta) Model of printhead : C4900A C4901AUsed with ink cartridge HP 940XL or HP 940 Compatible printer model : HP Officejet Pro 8000 ,Officejet Pro 8000 Enterprise ,Officejet Pro 8000 Wireless,Officejet Pro 8500 ,Officejet Pro 8500 Wireless,Officejet Pro 8500A , Officejet Pro 8500A Plus All remanufactured HP 940 printhead are easy to install and are manufactured with ISO 9001 approved. performing as same as originals at a affordable price,we suggest that you can clean the printhead firstly before printing to ensure printing result Warranty: 1-year limited warranty.If any problem, please feel free to contact us via email,click "QINK" below price and then choose "Ask a question",we are always here for you. 1 x 940 <span class="a-text-bold">Black/Yellow</span> printhead (C4900A) 1 x 940 <span class="a-text-bold">Cyan/Magenta</span> printhead (C4901A)