Staedtler 432 TRIANGULAR BALLPOINT STICK PEN MEDIUM BLUE

These pens have a fine, 0.45 mm nib.
These pens are great for any workspace thanks to their reliability.
These pens have a crisp, smooth flowing ink.
The triangular barrel gives you extra comfort so you can write longer.
These pens have automatic pressure equalisation which stops them leaking on board planes.