TWSBI ECO Fountain Pen – Cosmo w/ Onyx features a piston filling system for easy ink refills from bottles, eliminating the need for cartridges. With its transparent barrel, you can clearly see your ink level at all times. Its balanced weight and well-designed size make it comfortable for long writing sessions.
The TWSBI Eco Cosmo showcases a vibrant marbled acrylic cap and piston knob in swirling turquoise, green, and violet tones, paired with sleek Onyx-black trim for a modern, eye-catching look. It features a durable stainless steel nib available in multiple sizes, delivering smooth, reliable writing for beginners and experienced fountain pen users alike. Perfect for journaling, note-taking, planners, or sketching with precision and style.
Available in multiple nib sizes, including Extra Fine (EF), Fine (F), Medium (M), Broad (B), and a 1.1mm Stub.
The TWSBI Eco Cosmo Fountain Pen is easy to maintain with the included wrench and silicone grease.
The pen arrives in a gift box.
