This carefully crafted and hand-formed brush for oil and acrylic paint has a flexible hair bundle that is resistant to wear and tear. The flexibility of the golden synthetic hair bundle makes this brush particularly suitable for acrylic paint, as acrylic paint is normally used in a more fluid consistency. The brushes have a flat (Gussow) hair bundle for creating sharp edges and straight lines. The width of the hair bundles on the included brushes is 3.5 mm, 4.3 mm and 5.3 mm