Smart Ink 972A 4 Pack Ink Cartridges for HP PageWide Pro 477dw 577dw 452dwThis four-pack combo includes black, cyan, magenta, and yellow ink cartridges designed as replacements for HP 972A. These cartridges work with a wide range of HP PageWide printers including the Pro 452, 477, and 577 series, as well as the Managed P55250dw and P57750dw models. They deliver high-quality prints at a fraction of the cost of original cartridges, making them a practical choice for home offices and businesses with moderate to high printing needs. For best results, turn off firmware updates on your printer before installing these cartridges to avoid poundsProductdimensions3.0 x 7.8 x 10.4 inches