The HP #909XL Black Ink T6M21AA is a high-quality ink cartridge designed to produce sharp, clear text and graphics in your prints. This cartridge is compatible with select HP printers and is easy to install and replace. With a high page yield and dependable performance, the HP #909XL Black Ink T6M21AA is a great choice for all of your printing needs. Printer Compatibility: HP OFFICEJET PRO 6960,HP OFFICEJET PRO 6970