This hair comes from the Siberian and Manchurian Sable, better known under the name of Kolinsky. It is a small animal that lives in the coldest areas of these regions, giving it a very strong and dense hair, an ideal hair for watercolors and mixed media. It has fantastic spring, snap, and color-holding ability.
The Raphaël Kolinsky Extra Long Rigger Brush has extra-long hair and a point that is excellent for rendering very long lines, delicate lettering, and outlining. It has an extremely narrow belly, making the entire length of the tip a reservoir for water and paint.