INKTONER 2PK remanufactured 940 printhead C4900A(Black/Yellow) C4901A(Cyan/Magenta) For HP officejet pro 8000, 8500, 8500A 8500A plus, 8500A premium 1.INKTONER 2 pack HP 940 Printhead 2.compatible for HP officejet pro 8000. 8500, 8500A,8500A plus, 8500A premium 3.C49600A C4901A