Princeton Artist Brush, Mini-Detailer Brushes for Watercolor, Acrylic and Gouache Series 3050, Spotter Synthetic Sable, Size 20x0 Precise brushes for precise tasks - Superb for fine detail in watercolor Sought-after by decorative artists and painters of miniatures in watercolor, acrylic, and gouache. Wooden handles are finished in a comfortable silicone allowing a firm grip and ultimate control. Our finest synthetic sable, the same used in our flagship 4050 series, assures a perfect point and crisp edges on flat shapes. A spotter is a round brush with shorter, tighter hair. The shorter hair has less flex than the round for accurate detail.