Original: $55.99
-70%$55.99
$16.80The Story
Discover the perfect balance of performance and design with the TWSBI Eco Plum with Onyx Fountain Pen, a stunning new edition of TWSBI's most popular and affordable piston-filling fountain pen. Renowned for its reliable mechanism and exceptional value, the Eco offers a transparent barrel that reveals the inner workings and beautifully displays your ink of choice, making each pen truly personal.
This TWSBI Eco Plum edition features a plum acrylic cap and piston knob, paired with sleek black metal accents for a striking contrast. The faceted cap adds a refined touch, while the prominent TWSBI logo at the top symbolizes the brand’s commitment to quality and craftsmanship.
Equipped with a durable stainless steel nib, engraved with the TWSBI emblem, the Eco Plum comes in a range of nib sizes to suit both beginners and experienced writers. Whether you're journaling, note-taking, or sketching, the pen delivers a consistently smooth and expressive writing experience.
Key Features:
- Model: TWSBI Eco Plum with Onyx
- Filling Mechanism: Built-in piston-fill (no cartridges required)
- Barrel: Transparent resin for full ink visibility
- Cap & Piston Knob: plum acrylic with faceted design
- Trim: Black metal accents
- Nib: Stainless steel, available in multiple sizes
- Cap Top: Embossed with the TWSBI logo
- Ideal For: Everyday writing, beginners, enthusiasts, and fountain pen collectors
Elevate your writing with the TWSBI Eco Plum — where function meets form in a sleek, piston-filled masterpiece.
A standout feature of the TWSBI Eco is its ability to be fully disassembled for cleaning and maintenance. Each pen comes with the necessary tools and instructions for disassembly, though this feature is recommended for experienced users and is not required for everyday use. Please note that disassembly is done at your own risk.
Discover the TWSBI Eco Plum with Onyx and enjoy a premium fountain pen experience at an affordable price, with the option to customize and maintain your pen as needed.
With a history of more than 40 years of manufacturing, including producing high-end pens for other brands, Ta Shin Precision decided to start selling under their own brand, TWSBI. The name TWSBI is made up from TWS and BI. ‘TWS’ is the reversed initials of the phrase ‘San Wen Tong’, translated Hall of Three Cultures, and ‘BI’ literally means writing instrument.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Discover the perfect balance of performance and design with the TWSBI Eco Plum with Onyx Fountain Pen, a stunning new edition of TWSBI's most popular and affordable piston-filling fountain pen. Renowned for its reliable mechanism and exceptional value, the Eco offers a transparent barrel that reveals the inner workings and beautifully displays your ink of choice, making each pen truly personal.
This TWSBI Eco Plum edition features a plum acrylic cap and piston knob, paired with sleek black metal accents for a striking contrast. The faceted cap adds a refined touch, while the prominent TWSBI logo at the top symbolizes the brand’s commitment to quality and craftsmanship.
Equipped with a durable stainless steel nib, engraved with the TWSBI emblem, the Eco Plum comes in a range of nib sizes to suit both beginners and experienced writers. Whether you're journaling, note-taking, or sketching, the pen delivers a consistently smooth and expressive writing experience.
Key Features:
- Model: TWSBI Eco Plum with Onyx
- Filling Mechanism: Built-in piston-fill (no cartridges required)
- Barrel: Transparent resin for full ink visibility
- Cap & Piston Knob: plum acrylic with faceted design
- Trim: Black metal accents
- Nib: Stainless steel, available in multiple sizes
- Cap Top: Embossed with the TWSBI logo
- Ideal For: Everyday writing, beginners, enthusiasts, and fountain pen collectors
Elevate your writing with the TWSBI Eco Plum — where function meets form in a sleek, piston-filled masterpiece.
A standout feature of the TWSBI Eco is its ability to be fully disassembled for cleaning and maintenance. Each pen comes with the necessary tools and instructions for disassembly, though this feature is recommended for experienced users and is not required for everyday use. Please note that disassembly is done at your own risk.
Discover the TWSBI Eco Plum with Onyx and enjoy a premium fountain pen experience at an affordable price, with the option to customize and maintain your pen as needed.
With a history of more than 40 years of manufacturing, including producing high-end pens for other brands, Ta Shin Precision decided to start selling under their own brand, TWSBI. The name TWSBI is made up from TWS and BI. ‘TWS’ is the reversed initials of the phrase ‘San Wen Tong’, translated Hall of Three Cultures, and ‘BI’ literally means writing instrument.
















