Bosumon 950XL Compatible Black Ink Cartridge Replacement For Hewlett Packard HP 950XL (2 Black) Fitted with new upgraded chips, printer can recogize it directly Page Yield: 2,300 pages per black cartridge Printer compatibility: HP Officejet Pro 8600 8610 8620 8630 8640 8660 8615 8625 251dw 271dw After-sale service :Two years worry-free warranty. Support team consist of highly trained customer service staffs and technicians in generic ink cartridge industry for ten years ,will always be here for your service .Ease your way in using BOSUMON ink.Any request from our honored customers will be answered in 24 hours. 100% satisfaction guaranteed and 12 months warranty