Maximum capacity, HP LaserJet 15X ultraprecise print cartridge is designed to work precisely with the selected HP LaserJet printers for output that is always clear, always sharp. Ultraprecise advancements and an economical price provide an ideal cartridge solution for the high-volume user who values HP reliability and quality with every printed page. Ultraprecise advancements in the C7115X cartridge include dual polymer toner and a helical roller drive.