TWSBI ECO Jelly Yellow Fountain Pen

TWSBI ECO Jelly Yellow Piston Fountain Pen

The TWSBI ECO Jelly Yellow Fountain Pen combines modern industrial demonstrator aesthetics with everyday writing reliability. Designed with a transparent resin barrel and an eye-catching translucent yellow cap and piston mechanism, this fountain pen allows you to admire the internal mechanics and monitor your ink level at a glance. Featuring an upgraded aluminium grip section, it delivers optimal ergonomic balance for students, writers, and artists tackling extensive note-taking and daily sketching sessions.

Key Features

• Integrated Piston-Fill System: Internal high-capacity piston mechanism draws ink directly from bottles with a simple twist of the rear knob, eliminating the need for cartridges or converters.
• Ergonomic Aluminium Grip: Precision-machined aluminium alloy grip section provides a cool, tactile hold and lowers the pen's centre of gravity to prevent finger strain during marathon writing.
• Crystal-Clear Resin Body: Tough, scratch-resistant acrylic barrel reveals ink agitation and volume while showcasing your favourite bottled fountain pen inks.
• Crafted Precision Nib: Tuned stainless steel nib delivers consistent capillary ink flow, providing a smooth, responsive tactile feedback on a variety of paper textures.
• User-Serviceable Design: Includes a packaged mini maintenance wrench and silicone lubricant to facilitate effortless disassembly and piston seal maintenance for years of reliable use.

Specifications

• Brand: TWSBI
• Model: ECO Jelly Yellow
• Body Material: High-Grade Transparent Resin / Acrylic
• Grip Section: Lightweight Machined Aluminium Alloy
• Filling Mechanism: Integrated Piston Filler (Bottled Ink Only)
• Ink Capacity: Approximately 1.76 ml
• Capping Mechanism: Screw Cap with Inner Seal to Prevent Ink Drying
• Overall Weight: Approx. 21g

Frequently Asked Questions

How do I fill the TWSBI ECO fountain pen with ink?

Submerge the nib and feed fully into bottled ink, twist the rear piston knob counterclockwise to lower the plunger, and then slowly turn the knob clockwise to draw ink into the barrel reservoir. Wipe the grip and nib with a lint-free tissue.

Does this pen accept ink cartridges?

No, the TWSBI ECO utilises an integrated internal piston-filling mechanism engineered exclusively for bottled fountain pen ink, offering significantly higher ink capacity than standard international cartridges.

How do I maintain and lubricate the piston?

Each pen comes complete with a custom disassembly wrench and silicone grease. When the piston turning resistance increases after extended use, gently unscrew the piston assembly with the wrench, apply a tiny dab of silicone grease to the rubber piston seal, and reassemble.

What is the store order and customer support policy?

Our UK customer support team is available to assist with all product and order enquiries. Please contact us via our website contact form or directly email szjyx@outlook.com. Orders can be cancelled for a full refund prior to dispatch, and all items are covered by our standard 14-day UK return policy.