This set includes four remanufactured toner cartridges for the HP 312A series, featuring black, cyan, magenta, and yellow colors. Each cartridge is designed to deliver high-quality prints and is guaranteed to perform flawlessly with your HP printer. Unlike competitors who may simply refill cartridges, these toners are fully disassembled and rebuilt to ensure optimal performance. The use of LD remanufactured toner cartridges does not void your printer's warranty and each cartridge is backed by a 100% satisfaction guarantee.