TWSBI Eco-T Fountain Pen in Eggplant Purple - 1.1mm Stub Nib - NEW in Box
The cap and piston-knob are also shaped in a rotary triangular design. TWSBI Eco-T Fountain Pen Specifications. After writing hundreds, if not thousands, of pages, you can maintain your TWSBI Eco-T using the included wrench and silicone grease.