TWSBI ECO Fountain Pen - Cerulean Blue is the latest Eco launched September 2022. The Penhas a piston ink-filling system, very smooth-writing steel nib and a screw-on cap.
TWSBI ECO Cerulean Blue Fountain Pen uses only bottled ink and the clear body allows the user to view the level of ink remaining in the pen at all times.
The Eco Pen cap has an inner cap to insure a perfect seal when stored away.
TWSBI believes that it is important to allow the user to disassemble and reassemble the pen, in order to completely experience the traditional aspects of owning and using a fountain pen.
TWSBI packaging includes the fountain pen, a wrench and silicone grease.