Discover the perfect balance of style, value, and function with the TWSBI Eco Black Marble with Bronze Fountain Pen. Featuring a striking black and grey swirled resin body accented by warm bronze trims, this special edition Eco combines eye-catching design with the quality craftsmanship TWSBI is known for.

Built with a transparent barrel, the Eco Black Marble allows users to see the piston filling system in action—providing a clear view of the ink level and creating a dynamic visual experience that changes with every ink color you use. The bold faceted cap and polished stainless steel nib engraved with the TWSBI logo further elevate the pen’s sleek, modern appeal.

Ideal for both beginners and seasoned writers, the Eco’s piston-fill mechanism offers generous ink capacity and a smooth, consistent writing experience. Choose from a variety of nib sizes to suit your writing style.

Key Features:

• Special edition Black Marble color with elegant bronze trim
• Transparent barrel reveals ink level and piston mechanism
• Faceted cap with TWSBI logo for a bold, modern design
• Stainless steel nib (multiple nib sizes available)
• Piston-filling system – no cartridges required
• Excellent value for everyday use or growing your fountain pen collection

Whether you're journaling, sketching, or taking notes, the TWSBI Eco Black Marble delivers dependable performance with artistic flair—making it a standout addition to any pen collection.

TWSBI fountain pens can be entirely disassembled for the purposes of cleaning and servicing. Instructions and necessary tools are supplied with each TWSBI fountain pen. Please note that the disassembly feature is only there for experienced users and is not necessary for daily use. Disassembly is at your own risk!

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.

Limited Stock - 

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A quick no brainer guide in choosing nib sizes in an overly complicated fountain pen world:

• If you write small, go with an Extra Fine.
• For the normal writer, Fine is the most popular.
• If you tend to lean on a bigger font, Medium will be perfect.
• Broad is for statements!! Sign a check in Broad, write a header in Broad, do some coloring/shading in Broad.
• Stub nibs are italic in writing style (great for writing in special cards or invitations).