A flat head with an oval tip for creating a broad mark with a soft edge.
Paintbrush - Wikipedia
Monarch Brush - Monarch, Filbert, Long Handle, Size 10
Winsor & Newton Monarch Synthetic Brushes
Winsor & Newton - Monarch Brush - Short Filbert - 4
Winsor and Newton Monarch Brush - Filbert - Size 0 (2mm)
Winsor & Newton Monarch Filbert Long Handle Brush, Size 0
Winsor & Newton Monarch Single Brush: Filbert
Winsor & Newton Monarch Brush Short Filbert #4
Winsor & Newton Monarch Brushes
Winsor & Newton Monarch Bright Long Handle Brush, Size 0