Otto Hutt D06 Classic blue vulpen Nib:Extra fine (EF) ballpoint pens and mechanical pencils Pen tip:Fine (F) ballpoint pens and mechanical pencils of Visconti's Van Gogh 2011 collection are themselves paintings The pen is equipped with a fixed piston mechanism and the holder has an ink window so that the ink supply is always visible The smooth feel points the way forward Proven quality meets elegance