This set includes two compatible replacement HP W1143AD (HP 143A) black laser toner reload cartridges, each delivering up to 2,500 pages. Designed to provide reliable performance with your HP laser printer, these cartridges are not remanufactured but are brand new and engineered to meet high standards of quality. Utilizing compatible cartridges does not void your printer warranty, and they offer comparable printing results to the original HP cartridges. Backed by our 100% Quality Satisfaction Guarantee.