Montblanc Ink Cartridges Permanent Ink Colour:Blue a natural product made from

a natural product made from carbonised wood

Twist-action retract mechanism operates smoothly

Herbin Metal Ink Rollerball Pen

Takes international standard cartridges

The recessions in the barrel reduce the overall weight of the pen whilst allowing it to keep its large size

Montblanc Ink Cartridges Permanent Ink Colour:Blue a natural product made fromMontblanc ink cartridges, containing permanent fountain pen ink. International standard cartridges of the short type, suitable for many other fountain pens. Montblanc don't just follow this standard it was their cartridges that created the standard so many other manufacturers now use.