TWSBI
TWSBI Eco Fountain Pen in Transparent Yellow Medium
SKU: M2531790 · In Stock
TWSBI Eco Fountain Pen in Transparent Yellow Medium
The TWSBI Eco Fountain Pen in Transparent Yellow is a vibrant and functional writing instrument designed to combine style, comfort, and performance for writers of all levels. Featuring a semi-transparent yellow resin body, this pen not only delivers a cheerful and eye-catching aesthetic but also allows full visibility of the ink level and the internal piston filling mechanism, making it both practical and visually engaging. Equipped with a smooth stainless steel nib available in multiple sizes, the Eco provides a consistently fluid writing experience that is perfect for note-taking, journaling, creative sketches, and everyday writing tasks. Its twist-action piston-fill system draws ink directly from bottled ink, offering a generous ink capacity that supports extended writing sessions without frequent refills. Lightweight and ergonomically balanced, the pen is comfortable to hold for long periods, with a gently tapered grip section that ensures precision and reduces hand fatigue. The screw-on cap seals securely to prevent ink from drying out and can be posted on the back of the pen for added length and writing comfort. Crafted from durable, high-quality resin, the TWSBI Eco is fully disassemblable, making it easy to clean and maintain for years of reliable performance. With its bright transparent yellow finish, practical demonstrator design, and dependable writing quality, the TWSBI Eco Fountain Pen in Transparent Yellow transforms everyday writing into an enjoyable, smooth, and visually inspiring experience for students, professionals, creatives, and fountain pen enthusiasts alike.
Product Information
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Design & Body
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Semi-transparent yellow resin barrel and cap
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Screw-on cap with secure seal to help prevent ink drying
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Chrome trim and spring clip for refined detailing
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Lightweight and durable construction for everyday use
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Demonstrator-style body showcases ink level and internal piston mechanism
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Nib & Writing Performance
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Polished stainless steel nib available in multiple sizes: Extra Fine (EF), Fine (F), Medium (M), Broad (B), and 1.1 mm Stub
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Smooth, consistent ink flow suited to all writing styles
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Ideal for everyday writing, creative scripts, journaling, and note-taking
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Filling System
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Twist-action piston filling system draws ink directly from bottled ink
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Large ink capacity supports extended writing sessions
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Comfort & Ergonomics
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Balanced, lightweight feel (approx. 21 g) for comfortable long writing sessions
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Slightly tapered grip section provides secure handling
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Maintenance & Durability
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Fully disassemblable design allows for easy cleaning and long-term maintenance
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Resin body and screw-on cap provide durability and everyday reliability
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Dimensions & Specifications
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Length (Closed): ~139 mm (5.45 in)
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Length (Uncapped): ~131 mm (5.18 in)
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Length (Posted): ~168 mm (6.6 in)
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Diameter: ~12.8 mm
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Weight: ~21 g
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Ink Capacity: Approximately ~1.7–1.8 ml via piston fill
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Ideal For
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Fountain pen beginners exploring piston-filled pens
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Students and professionals seeking a reliable daily writer
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Creatives and journalers looking for expressive writing performance
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Pen lovers who enjoy demonstrator aesthetics and bottled ink customization
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Clear body makes monitoring ink levels easy
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