* This is a premium quality, remanufactured HP 45 black ink cartridge * Our HP 45 ink cartridge is compatible to a HP 51645a ink cartridge, but contains some of the darkest, most heavily pigmented, waterbased, HP 45 ink on the market, so as to insure a sharp and crisp print * Extended page yield @ 5% coverage - 830 pages * This spectacular HP 45 cartridge performs well as a HP deskjet ink, but is, also, suitable as mail address printer ink - when printing on porous stock, without a drier. Our Marconi equipment customers love this ink * Our part - pg45 * One year warranty * Volume discounts * Made in america * Free UPS Ground, or US Priority Mail, from CA * For a less costly, lesser page yield and lesser pigmented HP 45 ink cartridge, please visit our section - "HP Black, Color Ink Cartridges" * US SALES ONLY - IN STOCK