TWSBI Diamond 580 Fountain Pen, Clear
TWSBI Diamond 580 Fountain Pen, Clear
TWSBI Diamond 580 Fountain Pen, Clear
TWSBI Diamond 580 Fountain Pen, Clear
TWSBI Diamond 580 Fountain Pen, Clear
TWSBI

TWSBI Diamond 580 Fountain Pen, Clear

Variant
$50.00
The TWSBI Diamond 580 was born from a desire to revive the elegance and simplicity of classic fountain pens, while reimagining them for the modern writer. As sleek, digital tools took over, traditional writing instruments began to fade into obscurity. TWSBI set out to change that by creating a pen that honors the craftsmanship of the past while embracing contemporary design and functionality.

The Diamond 580 features a high-capacity piston-filling system and a striking transparent body with a modern industrial aesthetic. Every part is fully detachable, allowing users to disassemble and reassemble the pen themselves, inviting a hands-on appreciation of the engineering behind it.

Blending time-honored mechanics with a clean, updated look, the Diamond 580 is both a nod to tradition and a tool built for today’s writing experience.
  • This pen only uses bottled ink. Ink is not included.
  • Piston filling system
  • Features an inner cap to insure a perfect seal when stored away
  • Upon arrival, some ink from may be visible on the nib from dip testing at TWSBI. We recommend cleaning before use
  • Please use care if you disassemble the nib and feed, as the feed is very fragile
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TWSBI (pronounced TWIZ-BEE) has become a staple in the fountain pen community, known for its high-quality, piston and vacuum-filling demonstrator pens at an exceptional value. Though it may seem like a newer brand, TWSBI’s history spans over 50 years as Ta Shin Precision, an OEM manufacturer producing parts for well-known brands. A decade ago, the company shifted to designing its own pens, combining traditional craftsmanship with modern innovation.

With a name inspired by Chinese calligraphy, TWSBI is dedicated to creating durable, high-performing pens featuring smooth stainless steel nibs, excellent cap seals, and transparent designs that showcase their intricate filling mechanisms. Their user-serviceable approach, with included tools for maintenance, makes them a favorite among writers, professionals, and pen enthusiasts looking for reliability, style, and a hands-on writing experience.