Nikko is a Japanese brand popular with calligraphers and illustrators around the world, because of the quality and versatility of products for calligraphy and drawing.
Nikko 659 (Maru Pen) is a small hard nib, designed for drawing sharp lines. Maru nibs - mapping or round - are ideal for producing strong and crisp lines that are difficult to duplicate with pens and brushes due to the extra fine tip and little flexibility.
They are great for creating detail in drawings. Varying nib sizes are available to suit your drawing needs. Each nib should be used with a nib holder which is sold separately.