A modern classic in TWSBI's line-up, the Eco Black pairs a matte black acrylic body with a clear demonstrator window, giving you a pen that looks understated on the outside while letting you watch the piston mechanism work on the inside.
Key Features
Matte black plastic body with a metal spring clip
Stainless steel nib, available in Extra Fine, Fine, Medium, Broad, and Stub 1.1mm
High-capacity piston filler that holds up to 1.7ml of ink
Screw-on cap mechanism for a secure, no-drip carry
Filling System
Unscrew the end cap, dip the nib into your bottled ink, turn the piston knob, and you're ready to write. No cartridges or converters needed.
