Lock in the quality and performance you expect from your HP Officejet Pro X printer with the cartridge it's designed to use. Black ink cartridge is designed for high quality and high speeds for Hewlett-Packard Officejet Pro X451dn, Pro X476dn, Pro X551dw and X576dw. Durable, highlighter-resistant, HP pigment inks deliver professional-quality text and graphics and reliability. HP 970XL high-capacity cartridges print up to two times more pages black text than standard supplies. Ink cartridge yields approximately 9,200 pages.