SPEED Remanufactured Ink Cartridge Replacement for HP ( Black,Cyan,Magenta,Yellow , 8-Pack ) HP 920BX ink tank contains 50ml, yields up to 1700 pages per cartridge @ 5% coverage. HP 920XL color ink tank contains 12ml, yields up to 750 pages per cartridge @ 5% coverage. Compatible Printers: Officejet 6000, Officejet 6500A Plus, Officejet 6500 Wireless, Officejet 6500, Officejet 7500A, Officejet 6000 Wireless, Officejet 7000, Officejet 6500A. Print Effectiveness: Make printing smoother, natural looking images and fewer granularities, producing best looking prints ever. Inks stop to come out automatically when printing is over. Technology: SPEED ink cartridges are adopted the leading Print Head Cleaning Technology, Print Head Testing Machine Technology, Eco Friendly Technology, Zero-energy Technology. The cartridges underwent an extensive process including, cleaning, testing the chip, ink vacuum refilling, totally pass to 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.