The Tombow Fudenosuke Soft Tip Brush Pen features a flexible elastomer brush tip. Its soft tip works beautifully for different lettering and drawing techniques. Great for calligraphy and art drawings. Artists and calligraphers can create extra-fine, fine or medium strokes by changing brush pressure. The barrel is made of recycled polypropylene plastic material. Its pigment black ink is water-based and odorless.