TRU RED C6656AN HP 56 Remanufactured Ink Cartridge - Standard Yield - BlackPrint consistently clear images and easily legible text with this ink cartridge. The remanufactured unit works with a variety of HP printers and is easy to switch between compatible office machines. This TRU RED remanufactured HP 56 black ink cartridge yields up to 520 pages of professional quality text to keep up with office demand.