When we set out to create a synthetic version of squirrel, we developed a brush that may actually outperform the natural version. Neptune is Princeton's softest and thirstiest synthetic brush, delivering oceans of color. Experts in natural hair have been incredulous that this is actually synthetic. Neptune is proudly offered in a beautiful range of shapes including mottlers and quills with rich wood tones and sea glass aquarelle handles.Details: Series 4750 12 sets (3 assorted brushes per set) Synthetic squirrel filaments Brass ferrules Birch wood short handles For use with watercolorSet Contents: Size 2 round brush Size 4 round brush 3/8" (9.5 mm) dagger brush