Ink Choice Compatible 4pk Printhead for Hp11 Printhead for Hp 11 Designjet 70 90 100 110 500 510 500ps 800ps 9110 K850 Printing Head Pack listing : 1 Black, 1 Cyan , 1 Magenta, 1 Yellow Remanufactured Hp 11 Printhead,not made by hp. For use to Hp Inkjet 2200, 2250, 2280, 2600, HP Designjet 110nr, Designjet 10ps, 20ps, 50ps, 500 800 Color Inkjet cp1170 printers Please follow the instruction to install the printhead We stand behind every product we sell and offer a 100% satisfaction guarantee . Defective product can be exchanged or refund within 90 days.