The Nuvo Aqua Shimmer pen has a brush nib that is ideal for adding small glittering details or large shimmering areas to your designs. Combine with the Nuvo Aqua Flow pens to bring vivid watercolor pictures to life with a little extra glamour. The pen has a reservoir with a non-drip valve. It is easy to adjust the pressure and control the amount of liquid released. Perfect for paper crafting and mixed media projects.