Free flowing and long lasting; these are the two principles on which we developed these pens for reliable daily use. This series features three basic casings with different grips (polycarbonate, rubber-grip, and aluminium), and 36 different kinds of refill with varying nib size, ink type, and colour. We designed these pens to allow the casing and refill to be easily changed, creating a number of different combinations. And even though our pen users may not be particularly aware of it, this kind of design is also environmentally friendly, offering the ability to refill the necessary parts as required, rather than the whole pen.