The HP 45 New Black Ink Cartridges TWO Pack is a genuine/original product manufactured by HP in Ireland. These inkjet printer cartridges are specifically designed for HP printers, with an expiration date of MAR 2005. The black ink cartridges are compatible with the HP 51645a model, providing high-quality prints for your printing needs. With a total unit quantity of two, this product ensures you have an ample supply of ink to keep your printer running smoothly.