TWSBI Eco Slate Blue with Onyx fountain pen Nib:EF the stone and its minerals

the stone and its minerals transform into small grains of sand

the Nuvola reflects a sense of calmness and contemplation

gold-infused paintings such as The Kiss

Machine-cut guillochage inspired by the radiator grills of racing cars

TWSBI Eco Slate Blue with Onyx fountain pen Nib:EF the stone and its mineralsDe TWSBI Eco is made of transparent plastic, which provides a wonderful view on the inside of the pen, the cap and piston mechanism are made of dark blue color color plastic with black nib and clip. The pens character will change with every other color you fill it with. For the adventurous people, the pen is easy to take apart for servicing or cleaning. A key and silicone grease are provided with the pen. Do this on your own risk. TWSBI has been