"Sienna" Brushes by Robert Simmons Short Handled Synthetic Hair Brushes These popular brushes are perfect for watercolor and acrylic painting. The brush itself is composed of a high quality state of the art blend of synthetic filaments. The result is a smooth soft feel and tips that return to a sharp point or edge every time. The ferrules are precision engineered and 22K gold-plated to add a final touch of luxury. Available in an extremely versatile range of shapes and sizes!