This Size 10 Academy Oil and Acrylic Filbert brush features a long handle. It is made of soft white nylon, ensuring even strokes and excellent color carrying qualities. This student grade brush for oils and acrylics combines quality craftsmanship at an affordable price. It is particularly matched to the Grumbacher Academy Oils and Acrylic paints. Filberts are a perfect compromise between rounds and flats. They are shaped like a flat with a curved end allowing for more flexibility than a flat. The side can be used like a round and the broad side like a flat. The Filbert brush was invented by the Impressionists in order to have the feeling of a worn-in flat with maximum flexibility, and it has become a favorite of painters everywhere. Since 1905, Grumbacher has been a brand trusted by students, professors, art conservationists, and professional artists throughout the United States.