Langnickel Royal SableTek is over 20 years in the making. The original Royal Sable was a natural hair alternative to pure red sable with more body, snap and strength. Royal SableTek is the synthetic alternative made of a proprietary blend of the finest quality synthetic filaments developed to replicate the experience of painting ith the original Langnickel Royal Sable. The result is more control and precision in executing brush strokes, added durability in maintaining points, and consistent edges. They allow the artist to lay down the maximum amount of color and follow through with longer strokes. These brushes may be used with any viscosity of paint, but work best with acrylics and oil.