The product is a set of genuine/original Lexmark toner cartridges designed for use with the Unison CS/CX 420-520-620 series of printers. The cartridges come in cyan, yellow, magenta, and black colors, with the specific model numbers being 78C10C0 for cyan, 78C10Y0 for yellow, 78C10M0 for magenta, and 78C10K0 for black. These cartridges are new OEM (Original Equipment Manufacturer) products, ensuring high quality and compatibility with the designated printer models.