This set includes four remanufactured toner cartridges for the HP 311A series, offering a reliable alternative to original HP products. The set features black, cyan, magenta, and yellow cartridges, delivering a total yield of up to 12,000 pages. Each cartridge is fully disassembled and rebuilt to ensure high-quality prints and compatibility with your HP printer. The use of these remanufactured cartridges does not void your printer's warranty and is backed by a 2-year guarantee.