The 212 Flat Definer Brush is ideal for lining and defining the eye with color. Its firmly bristled, flat shape applies color in a single stroke to provide instant definition. The synthetic-fiber tool is suitable for use with powder, liquid or cream products. M·A·C professional brushes are hand-sculpted and assembled using the finest quality materials. They feature wood handles and nickel-plated brass ferrules. By M·A·C.