Pelikan Rollerball Pen Refill 338 (M) - Blue

Rollerball Refill 338, The Refills from Pelikan for ball point pens and rollerballs. Available in different line widths and colors. The Rollerball Refills 338 from Pelikan have a solid tip of stainless steel and a tungsten carbide ball. For Souver?n and Celebry Rollers.
Solid tip of stainless steel, tungsten carbide ball

for Souver?n ink ball pens
colours: black and blue
M = medium (1 mm ?)