Princeton Art & Brush Company - Natural - Set of 4 Watercolor Brushes" /> Round - for fine detail & fine line to wide line control. Flat / Shader - for large even strokes, holds lots of color & delivers clean crisp edges. Angular Shader - for precise strokes & blending in tight areas. Fan - for smoothing and blending color, also used to create special effects like glass. Stencil - for pressing color into cutout areas of stencils & for textural effects.