Posca Water Based Paint Markers provides the ink quality of a paint marker and adds it with the ease of a standard pen. These markers can be used by professionals such as graphic designers to produce rough sketches and even artists for defined details and outlines. The markers have an extra-fine bullet tip measuring 0.7mm, which creates consistent and smooth lines. It also comes with snap cap that fits into the top of the barrel, thereby preventing you from losing it. A convenient click mechanism prevents any leakage.