Nar Cartridges's HP PTQ7551A series compatible high yield laser toner cartridges are guaranteed to meet or exceed original HP printer cartridges in both print quality and page yield. Our toner cartridges have been engineered to create consistent, high quality images. Our Compatible With HP PTQ7551A series compatible toner cartridges are made with the highest quality new and recycled components in ISO9001 / ISO14001 certified factories. Nar Cartridges offers 100% OEM compatible toners and a lifetime performance guarantee.