Actually these pins carry the idea of the pencil so absurd ... because the advantage of pencils is actually the one that they are completely waterproof and not even then smudging when the paper would collect water, or even falls entirely into the water. While the paper does not dissolve, even the pencil order remains largely intact. Indispensable for sketching outdoors, especially in bad weather, high humidity, or other humid adversity. This advantage is at the Aquarelle graphite pencils natural way! Nevertheless, this variant of the old pencil has its place! It is precisely when it comes to quick sketching, you quickly and easily with these pins also to larger-area courses and just in a very respectable Graphite look. Even the, for pencil drawings usual and desired, paper texture look you have not completely without ... then you have to give, after drying, light "hatch after-" again with the pencil. Is not the same thing, but still ...! All in all: not a substitute for good old pencil, but a nice addition, especially for the not so experienced graphite illustrator!
PS: Of course, can be personalized with the Faber-Castell Albrecht Dürer watercolor pencils, in various shades of gray + Black, achieving very similar effects as with the graphite watercolors!