HOTCOLOR 970XL Black CN625AM#140 Ink Cartridge for OfficeJet Pro X451DW X451DN X551DW Printer 1. What's in the box: 1 Pack Black Remanufactured Ink Cartridge for HP 970XL HP 971XL HP 970 HP 971 2. 970XL 971XL ink Cartridges work with: HP Officejet Pro X476dw X576dw X476dn X451dw X551dw X451dn Printer 3. Page Yield: 970XL Black CN625AM Up to 9200 pages; 971XL Cyan Magenta Yellow Up to 6600 pages Per Ink Cartridge.(at 5% coverage) 4. Type: Work as HP 970XL CN625AM#140 HP 971XL CN626AM#140 CN627AM#140 CN628AM#140 Original Ink Cartridge ; Remanufactured by HOTCOLOR (ISO 9001 certified facility);Not made by HP. 5. Guarantee: 120 days quality warranty.If there is any problem,DO NOT hesitate to contact us.