Remanufactured High Yield Ink Cartridge Replacement for HP 950XL and 951XL for use in OfficeJet 8100 8600 8600 Plus (1 Black, 1 Cyan, 1 Magenta, 1 Yellow, 4-Pack) 950BX Black ink tank contains 80ml, page yield up to 2500 pages per cartridge @ 5% coverage. 951CX Color ink tank contains 25ml, page yield up to 1500 pages per cartridge @ 5% coverage. Compatible Printers: OfficeJet8100/8600/8600 Plus. Print effect: Make printing more smooth, natural looking images and fewer granularities, producing best looking prints ever. Inks will stop coming out automatically when printing is over. Technology: SPEED ink cartridges are adopted the advanced Print Head Cleaning Technology, Print Head Testing Machine Technology, Eco Friendly Technology, Zero-Carbon Technology. The cartridges underwent a complicated process includes cleaning, testing the chip, ink vacuum refilling,etc. Totally 27 production lines. All cartridges reach the standard when they are tested in any severe environment. Warranty: CE, TUV, ROHS, ISO9001, ISO4001 International Quality Certified.