The steel nib with iridium tip is the foundation and heart of Stipula fountain pens. Each nib is individually set and tested to ensure optimal comfort and writing experience.
 Available in various tip sizes and finishes.

 
 XF : tip size approx. 0.6- 0.65 mm
 
 F : tip size approx. 0.75 - 0.8 mmx
 
 M : tip size approx. 0.8 - 0.85 mm
 
 B: tip size about 1mm
 
 0.9: Tip size about 0.9mm STUB
 
 M-Flex: tip size approximately 0.75mm. This nib features an elongated central cut allowing for greater flexibility and variable line width.