The TWSBI ECO fountain pen is an economical and high-quality piston filler. Its sleek, transparent barrel lets one see the ink, while the hexagonal cap posts securely. The piston mechanism fills directly from bottled ink, no cartridges needed. This limited edition showcases a marbled black cap and piston knob, complemented by bronze trim. Each pen features a unique marbling pattern, making it one of a kind. TWSBI designed this pen to be self-serviceable, providing a wrench and silicone grease for maintenance.
