This set includes four remanufactured toner cartridges for the HP 644A series, providing a cost-effective solution for your printing needs. The cartridges replace the original HP Q6460A (black), Q6461A (cyan), Q6463A (magenta), and Q6462A (yellow). Each cartridge is designed to deliver reliable performance and high-quality prints, ensuring that your HP printer operates smoothly. Remanufactured using both OEM and non-OEM parts, these cartridges are backed by a 2-year guarantee, giving you peace of mind with your purchase.