RIGHTINK 4pack (BK C M Y) Replacement for HP 950XL 951 ink cartridges Fit for HP Officejet Pro 8640 8100 8625 8615 251dw 271dw Printers Package Contents: 1 * Black HP950XL + 1 * Cyan HP951XL + 1 * Magenta HP951XL + 1 * Yellow HP951XL Type: Premium Compatible/Remanufactured ( Not Made by HP) Compatible Printer List: HP OfficeJet Pro 251dw, OfficeJet Pro 276dw, OfficeJet Pro 8100, OfficeJet Pro 8600, OfficeJet Pro 8600 Plus, OfficeJet Pro 8600 Premium, OfficeJet Pro 8610, OfficeJet Pro 8615, OfficeJet Pro 8620, OfficeJet Pro 8630 OfficeJet Pro 8640,OfficeJet Pro8625 ,OfficeJet Pro8615 Gurantee:Good after sale service and all products covered by a 100% satisfaction guarantee and 90 days warranty Feature : 1. The color can perform as the original products. 2. The rest of ink rate is 0 and the usage rate is 100%.