This product is a set of three genuine/ original HP DesignJet Ink 72 cartridges in yellow, cyan, and magenta. These cartridges are specifically designed for HP printers and are compatible with the HP brand. The colors included in this set are gray, yellow, and black, making them versatile for a variety of printing needs. These cartridges are model 72 and are perfect for those looking to replenish their printer ink supply with high-quality, authentic HP products.