The Zen brush line features exclusive filament and hair blends, a broad size and style selection and metallized waterproof handles. The brushes are designed to meet the needs of beginning, intermediate and advanced artists working in a variety of mediums. The complete line includes six brush series, each with its own purpose. Each set contains five brushes in a variety of styles and sizes. The Acrylic/Oil Brush Set, Series 33 contains one each of the following: Fan size 4, Bright size 1, Flat size 12, Filbert size 2, and Angular size 8.