The Genuine Lexmark Toner Cartridge Set includes four high-yield toner cartridges in cyan, yellow, magenta, and black colors. These return program cartridges are specifically designed for Lexmark printers, providing high-quality printing results with a laser print technology. Compatible with models like the 2400, 2300, MC2640, and 2500 Series, this set is ideal for professional printing needs with reliable Lexmark brand assurance.