Dataproducts DPC935XLC Remanufactured Cyan High Yield Inkjet Cartridge for HP 935XL Ink Assembled in USA Premium ink cartridges that meet or exceed OEM quality, page Yield, and reliability 1-year warranty, 100% performance guarantee: the use of this Dataproducts Print cartridges does not void your printer's warranty Compatible hardware: HP office jet 6220; office jet Pro 6820, 6830 Page Yield: 825