Pentel Colour Brush pen, Olive Green #115The Colour Brush pens have synthetic nylon bristles that don’t become deformed with use. This tip will allow you to control your strokes’ thickness.Quick dry watercolour ink, they can be mixed, used in gradients or blurs.These pens possess a valve to control the flow and avoid dripping. Perfect for techniques like calligraphy, comics drawing, illustration, etc.Colour: Olive GreenNumber: 115Brand: Pentel