Series 1505 maestro is an extra short length kolinsky sable round aka "the miniaturist" * The maestro designation denotes the highest quality winter male kolinsky red sable hair from the tobol river region in eastern siberia * Excellent for retouching of any sort and a favorite of miniature painters * Brushes are handmade from raw material to finished brush by skilled artisans at the da Vinci factory * Certified green manufacturing at the da vinci factory in germany