Uni-Ball Jetstream RT BLX Retractable Ball Point Pens, Bold Point, Green/Black Ink, Pack of 12 Experience color like never before--differentiate yourself with the deep, rich write of BLX black-infused ink. Features a unique hybrid ink that offers the smoothness of a gel with the quick-drying properties of a ballpoint. Ideal for left-handers because the ink dries so fast, there's little chance of smudging. Uni Super ink is specially formulated to become trapped in paper, helping prevent criminal check washing and other document alteration. Writes amazingly smoothly while providing crisp, vivid lines.