The Genuine Printhead 950 951 is specifically designed for use with HP OfficeJet Pro printers, such as the 8100, 8600, 8610, 8620, and 8630 models. This print head unit comes in cyan, yellow, magenta, and black colors, providing high-quality printing results. With genuine HP compatibility, this printhead is a reliable and efficient choice for those looking to maintain the performance of their HP OfficeJet Pro printer.