– The HP 339 Black Inkjet Print Cartridge 2-pack is ideal for high volume users – make sure you’ve got a spare cartridge when you need it. This enhanced black ink offers greater resistance to highlighter pen smear and provides darker black text. – Get consistently dark, laser-quality text for professional printing on all your documents. Enjoy bold, rich output when you choose a black pigment ink – ideal for making a strong impression. – Mark your documents with a highlighter pen – this enhanced black ink offers greater resistance to highlighter pen smear. Superior fade resistance lets you archive documents and important papers for decades. – High capacity, long-lasting cartridge design means fewer cartridge changes and greater productivity. Count on HP for a superior printing experience – you’ll get legendary HP reliability and consistent performance.