TWSBI fountain pens are modern, industrial-designed writing instruments tailored to the 21st Century pen enthusiast. TWSBI (commonly pronounced "twiz-bee") continues to excite writers worldwide with uncommon filling mechanisms and new, inexpensive pen designs.
While most of our modern communication devices lack transparency and customization, the TWSBI Diamond 580 excels with a transparent resin construction that can be disassembled using the included wrench.
The Eco-T gives beginning writers a more pronounced, triangular (that's where the "T" comes from) grip section to help properly grip their pen. The cap and piston-knob are also shaped in a rotary triangular design.
Take all the parts you love about the Diamond 580 - the modern, industrial design, the transparent barrel, the piston mechanism, the smooth-writing stainless steel nib - then make it more compact for writers who prefer a postable, pocket fountain pen.
The TWSBI Vac Mini is the smaller sibling of the Vac700R. The compact design allows for the cap to be posted on the back of the pen while writing. Like the Vac700R, the TWSBI Mini has a vacuum-filing system and can be disassembled using the included wrench.