The Sprinks filbert brushes are a flat brush with an oval shaped end with medium/long bristles. filbert brushes are versatile and provide the perfect balance to enable a variety of strokes to be used. When used on its side, a filbertt brush provides a thin line, and when used flat it produces a broad brushstroke.filbertt brushes can be used for blending, stroking, soft round edges, filling round areas, and for creating round strokes.- Precision brushing for your cakes, cookies, – sugarcraft models & desserts- Made from soft synthetic (food safe) bristles- Provides perfect coverageWash brushes immediately after use to maintain quality and shape.