Genuine HP 27X LaserJet high-yield black toner cartridge ensures professional-quality printing for high-volume needs. This UltraPrecise print cartridge is designed specifically for HP LaserJet 4000 and 4050 series printers to deliver sharp text and consistent results. The factory-sealed box contains one C4127X cartridge, engineered for reliability and efficient performance in demanding office environments. Made in Japan, this original equipment manufacturer (OEM) supply provides the science behind brilliant printing with a high-capacity yield.