This set includes four remanufactured toner cartridges for the HP 643A series: black (Q5950A), cyan (Q5951A), magenta (Q5953A), and yellow (Q5952A). Each cartridge is designed to deliver a total yield of up to 21,000 pages, ensuring reliable and consistent print quality. Our remanufactured cartridges are fully disassembled and rebuilt to meet high standards, providing exceptional performance with your HP printer. Using these remanufactured cartridges will not void your printer warranty and are backed by a 2-year guarantee.