Tekmall Compatible Ink Cartridge Replacement for HP 951XL  ( Black, Cyan, Yellow, Magenta , 6 pk ) One Year Worry-free after-sale Service : 100% customer Satisfaction.Any errors such as "damaged cartridges" , most probably caused by firmware update by HP,please contact us asap for supports by Click blue text "TEKMALL" below the price of listing, then click "Ask a question" highlighted in Orange on Top right of the next page to contact us or by log in your Amazon Buyer Account &gt; Your Account &gt; Your Order &gt; Contact Seller. We would give you support immediately, thank you for your time. Package Including : 3 * ink 950XL Black,1 * 951XL ink Cyan,1 * 951XL ink Magenta,1 * 951XL ink Yellow (NON-OEM) Page Yield (Approx.): ~2300 pages HP 950 XL ink; ~1500 pages per HP 951XL ink. Product Features: Perfect Sharp and Clear Printouts, Good Quality, High Yield, Quick Dry, Long Lasting. Compatible with: Officejet Pro 8610, 8615, 8625, 8620, 8630, 8640, 8660, 251dw, 276dw ,271dw, 8100, 8600, 8600 Plus - N911n, 8600 Premium - N911a Printers.