The calligraphy pen is available in line widths of 1.1 mm, 1.5 mm, 1.9 mm and 2.3 mm. There is also a TWIN feather that pulls two dashes at once. The calligraphy pen is made of bright spring steel in Germany. Each spring is checked for width exactly to minimize line width tolerances.
All Kaweco fountain pen springs are made exclusively in Germany
Note: This spring fits all fountain pens of the following Kaweco series: Ice Sport, Classic Sport, Skyline Sport, Chess, Guilloche