Similar to a paintbrush, the flexible nylon nib of these watercolor brush pens easily retain its shape through every stroke. The odorless, dye-based, water-soluble ink is easy to blend and layer. Works best on heavyweight plate-finish (smooth but uncoated) paper.

Contains one each of the following gray hues: cool gray, dark warm gray, warm gray, light warm gray, dark cool gray and light cool gray; 6 pens total.