TWSBI Eco clear fountain pen ballpoint pen featuring a spindle that turns

featuring a spindle that turns faster than the barrel’s end piece thanks to two distinct threads

cartridge/converter filling system and gold plated gold plated finish

The piston unit can be disassembled with an optional piston tool

available in luxury black

TWSBI Eco clear fountain pen ballpoint pen featuring a spindle that turnsDe 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 clear plastic. 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.