Hp toner cartridges are designed to perform consistently from the first page to the last. They offer outstanding print quality and give professional looking documents and photos. Hp original cartridges keep your machine protected and running at peak performance in both large office and small home environments. They are quick and simple to replace and a staple for any office. Black. Page yield 6900 at 5% coverage. For use in hewlett packard laserjet pro 400 m401 and pro 400 m425 series printers.