Isabey's most popular watercolor brush. Handmade by master craftswomen who apprentice for 10 years, it embodies French artisanal skill and tradition. Capable of unbelievably large and flawless washes, it is capable of unique brush strokes and line work, it features Siberian blue squirrel hair, which is the finest with the most hairs per square inch.Details: Quill mop Available in multiple sizes5 brushesSiberian blue squirrel filament Hand tied goose quill ferrule Short wood handle Delicate point Holds the highest volume of water possible For use with watercolor paints