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