The ZEBRA SURARI EMULSION Ink pen is an innovation in ink history. The Japanese pen company Zebra developed a new ink type for their ZEBRA SURARI EMULSION ink pen line. This new emulsion ink combines, in a perfect balance, an oil-based ballpoint and gel pen ink, bringing smoothness and vibrant colors at the same time, an amazing development! Available in multiple tip sizes and vibrant colors, ZEBRA'S emulsion is water-resistant, smear-proof, and even smoother than low friction ballpoint pens