Size: Length - 143mm capped; 178mm inches posted; 15mm max. diameter.
The Wing Sung 3009 is a piston filled brush pen. Brush pens were and still are, used for calligraphy, particularly Chinese and Japanese calligraphy. This pen has a transparent cap, barrel and gripping section so you acn see exactly how much ink you have in the pen at all times, and can actually watch it drawing ink into the reservoir.