TWSBI Diamond 580 AL R Prussian Blue fountain pen Nib:F In case you'd not want

In case you'd not want that

Thanks to their long growth phase

During the production process

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TWSBI Diamond 580 AL R Prussian Blue fountain pen Nib:F In case you'd not wantDe TWSBI Diamond 580 is made of transparent plastic, which provides a wonderful view on the inside of the pen, the piston mechanism and ink level. The AL version is equipped with a metal section and metal parts in the piston mechanism. With the TWSBI 580 AL R special series the metal parts of the section, cap and the ring at the piston know are in the special color. The pens character will change with every other color you fill it with. For the