Ball pen refills

According to DIN ISO 12757-2

With the permanent ink conforming to DIN ISO 12757-2.
Widths: F = fine (0.8 mm Ø), M = medium (1 mm Ø), B = broad (1.2 mm Ø)
Solid tip of stainless steel, tungsten carbide ball

Pelikan giant refill 337
International format.
colours: blue, red black

Pelikan 38 for K 350/300 and Level L 5 Duo-Pen

Pelikan 338 for Souverän ink ball pens

Level L5 refill for Level L5 ink ball pens: blue and black