This set includes 12 each of Series 329 Flat brushes Size 2, 4, 6, 8, 10, 12, 14, 16, and 20.
Brush sizes - The length and width of a brush of a given shape and size may vary by manufacturer as brush sizes are not standardized. Since fine art brushes are handmade, expect some variation even among brushes from within a single brush line.