Raphaël Sepia flat brushes are made of stiff synthetic interlocked fibers, which feature elasticity and precision. Great for acrylic and gesso applications, these brushes make precise strokes, feature a stainless steel ferrule and are easy to clean up.Details:FlatAvailable in multiple sizesStiff, synthetic fibersStainless steel ferrulePrecise strokes and easy clean upFor use with acrylic and gouache