The Size 3 Black Diamond Oil & Acrylic Round brush features an unbleached, undyed, natural black hog bristle that is slightly more flexible than a traditional Chungking hog bristle. These bristles are interlocked with natural flags for sharper edges and better color lay down. The non-slip, soft black handle offers better brush control and reduced hand fatigue. Rounds have a round ferrule and the tip is round and slightly pointed. They are designed for creating very controlled brush strokes and details. Since 1905, Grumbacher has been a brand trusted by students, professors, art conservationists, and professional artists throughout the United States.