Tachikawa Nib-77 Maru Pen is a small, quite soft nib designed for drawing sharp lines. Maru Nibs- Mapping or round- are ideal for creating highly detailed drawings due to the extra fine tip. Tachikawa 77 is bigger and more flexible than Tachikawa 99 Maru Pen Hard. This mapping style Tachikawa Comic Pen Nib draws thin lines to thick lines easily. The nib is soft, so it is more comfortable to control the nib and easier to draw thick lines.