This HP 11 Black Printhead is for use in HP Business Inkjet 1000, 1100dtn, 1200d, 1200dtn, 2200, 2250, 2250tn, 2280, 2280tn and 2300 printers. The printhead applies ink to the page and can be replaced to keep your printer working at optimum performance. This pack contains 1 black printhead.