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 delivers high quality and high speeds for HP Officejet Pro X451dn, X476dn, X551dw and X576dw. Durable, highlighter-resistant, HP pigment inks generate 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.