The cheapest black cartridge in the HP 981 range, the HP 981A is best way to get your printer up and running quickly. Although it may not have the astounding page yields of the black HP 981X and HP 981Y also available, 6,000 pages is not to be sniffed at.You can rely upon the genuine J3M71A to be fully compatible with many fine printers including the HP PageWide Enterprise Colour Flow MFP 586z. Prints produced with this black HP 981A are resistant to many environmental factors and look great too!