This Vallejo Flat Effects Synthetic Brush 4 features a brush with soft and flexible synthetic fibers, ideal for applying base colors on models and miniatures, as well as for drawing straight lines. This size 4 brush is perfect for making washes and color gradations in fresco, and their resistance makes them suitable for applying textures and pigments. The fiber length of this Vallejo Flat Effects Synthetic Brush 4 is 10mm and the fiber width is 4,5mm.