It's easy to get consistent, sharp, accurate results with Original HP inks, designed together with your printer as an optimized printing system. Ultra-pure inks provide sharp, accurate results, with intelligence built into the cartridge continuously optimizing quality and reliability. Avoid waste and rework with printing materials and inks engineered to work together. Fits 29-ml color and 38-ml black cartridges for low print volume, or 80-ml black/color 3-packs for high volume. Free convenient return and recycling available. Compatible with HP DesignJet T120, T520, T530, T525, T730, and T830 printers.