Tonic Studios-Nuvo Creative Pen Collection. These dual tip pens provide an innovative and professional finish to a diverse range of projects. The smooth, contemporary feel of the pen is comfortable and easy to control. The broad tip produces a wide mark to fill larger areas, while the fine tip is ideal for the delicate details. These pens are made with an alcohol based ink to produce an effortlessly smooth color. This package contains three 5-3/4 inch long duel tip pens in assorted colors. Conforms to ASTM D4236. Comes in a variety of colors. Each sold separately. Imported.