---
product_id: 27484672
title: "ECO Fountain Pen Clear EF Nib"
brand: "twsbi"
price: "€ 65.78"
currency: EUR
in_stock: true
reviews_count: 13
category: "Twsbi"
url: https://www.desertcart.pt/products/27484672-eco-fountain-pen-clear-ef-nib
store_origin: PT
region: Portugal
---

# Clear demonstrator body Extra Fine nib option Piston filler ink system ECO Fountain Pen Clear EF Nib

**Brand:** twsbi
**Price:** € 65.78
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write Boldly, Show Clearly — Your Ink, Your Statement

## Quick Answers

- **What is this?** ECO Fountain Pen Clear EF Nib by twsbi
- **How much does it cost?** € 65.78 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/27484672-eco-fountain-pen-clear-ef-nib)

## Best For

- twsbi enthusiasts

## Why This Product

- Trusted twsbi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Writing:** Extra Fine nib perfect for detailed notes, doodles, and professional documents.
- • **Show Off Your Style:** Transparent body lets your ink color shine, making every pen unique and personal.
- • **Beginner to Pro Ready:** Versatile nib options from EF to Stub 1.1, ideal for every writing style and skill level.
- • **Effortless Ink Refills:** Piston filler design means no cartridges—just dip, twist, and write all day.
- • **Secure Seal Technology:** Inner cap ensures your pen stays leak-free and ready, even after long storage.

## Overview

The TWSBI ECO Fountain Pen Clear EF Nib is a sleek, piston-filling fountain pen featuring a transparent demonstrator body that showcases your ink choice. With an extra fine nib for precise writing and an inner cap to prevent leaks, it’s designed for both beginners and seasoned writers seeking a reliable, stylish everyday pen.

## Description

Comes in EF, F, M, B, Stub1.1 nib choices Piston Filler Fountain pen. Simply unscrew the end cap, dip into ink, screw back the end cap, and your done! Ready to write!! Pen cap has an inner cap to insure a perfect seal when stored away. Made for the beginner who just wants to try out fountain pens, all the way to the experts. A good everyday worker.

Review: Great writing tool and an affordable price. - I've been carting around a 'Fine' point Eco, and while I enjoy writing with it, it's a bit too wet for my style. The EF is perfect for my writing - good for small and large writing with a much better 'doodle' capability. The large chamber is great so I don't have to refill it every other week, the nib writes smooth, and the look of the demonstrator with my Special Reserve - Shoreline Gold is chic. I'm very happy with my purchase, and similar to my other Eco, I look forward to many words in print.
Review: Pleasantly surprised! - Received this  Eco today and immediately filled with Iroshizuku asa-gao (same ink as my  Metropolitan). I kinda wanted a demonstrator and my self-imposed 3 month new pen buying waiting period was up. First, it looks cool especially w/ the purplish blue asa-gao. AND it writes just as good as it looks. Writing wise, it's smooth and although the EF Eco nib line width is about the same as the Pilot Metro F nib, the ECO is wetter and maybe feathers a tiny bit more than the pilot. This is on a standard, decent quality legal pad with no bleed through for either pen. HOWEVER, and this is big for me, the ECO spanks the metropolitan when writing with the nib upside down. I can write small, fast and fine with zero scratching, ripping or skipping. Lol, I can't believe I'm geeking out about a pen...

## Features

- Piston Filler Fountain Pen
- Pen cap is able to post onto the back of the pen
- Comes in EF, F, M, B, or stub1.1 nib size choices.
- Inner cap to insure a perfect seal when pen is capped
- Clear demonstrator

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EINGNUU |
| Additional Features | Eco Friendly |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #61,471 in Office Products ( See Top 100 in Office Products ) #214 in Fountain Pens |
| Body Shape | Round |
| Brand | TWSBI |
| Brand Name | TWSBI |
| Closure Type | Screw |
| Color | Clear |
| Customer Reviews | 4.7 out of 5 stars 508 Reviews |
| Drill Point | Extra Fine |
| Global Trade Identification Number | 04711467445308 |
| Grip Type | plastic |
| Hand Orientation | Ambidextrous |
| Hardness | F |
| Included Components | Piston converter, wrench, silicone grease |
| Ink Base | Water |
| Ink Color | Variable |
| Item Diameter | 0.5 Inches |
| Item Weight | 0.02 Kilograms |
| Line Size | 0.3mm to 1.9mm |
| Manufacturer | TWSBI |
| Material | Plastic |
| Material Type | Plastic |
| Model Number | TW100011 |
| Unit Count | 1 Count |
| Writing Instrument Form | Fountain Pen |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** TWSBI
- **Color:** Clear
- **Ink Color:** Variable
- **Writing Instrument Form:** Fountain Pen

## Images

![ECO Fountain Pen Clear EF Nib - Image 1](https://m.media-amazon.com/images/I/419GkpVx-+L.jpg)
![ECO Fountain Pen Clear EF Nib - Image 2](https://m.media-amazon.com/images/I/51x5+NGSW4L.jpg)
![ECO Fountain Pen Clear EF Nib - Image 3](https://m.media-amazon.com/images/I/71IqN7ANoGL.jpg)
![ECO Fountain Pen Clear EF Nib - Image 4](https://m.media-amazon.com/images/I/51iHYB++QIL.jpg)
![ECO Fountain Pen Clear EF Nib - Image 5](https://m.media-amazon.com/images/I/41v02E3exwL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great writing tool and an affordable price.
*by M***R on April 18, 2023*

I've been carting around a 'Fine' point Eco, and while I enjoy writing with it, it's a bit too wet for my style. The EF is perfect for my writing - good for small and large writing with a much better 'doodle' capability. The large chamber is great so I don't have to refill it every other week, the nib writes smooth, and the look of the demonstrator with my Special Reserve - Shoreline Gold is chic. I'm very happy with my purchase, and similar to my other Eco, I look forward to many words in print.

### ⭐⭐⭐⭐⭐ Pleasantly surprised!
*by G***G on May 23, 2022*

Received this <EF> Eco today and immediately filled with Iroshizuku asa-gao (same ink as my <F> Metropolitan). I kinda wanted a demonstrator and my self-imposed 3 month new pen buying waiting period was up. First, it looks cool especially w/ the purplish blue asa-gao. AND it writes just as good as it looks. Writing wise, it's smooth and although the EF Eco nib line width is about the same as the Pilot Metro F nib, the ECO is wetter and maybe feathers a tiny bit more than the pilot. This is on a standard, decent quality legal pad with no bleed through for either pen. HOWEVER, and this is big for me, the ECO spanks the metropolitan when writing with the nib upside down. I can write small, fast and fine with zero scratching, ripping or skipping. Lol, I can't believe I'm geeking out about a pen...

### ⭐⭐⭐⭐⭐ Wonderful Starter Pens!
*by F***5 on November 8, 2025*

This pen is widely recognized by fountain pen enthusiasts as one of the top two or three picks for first-time fountain pen buyers. The value for money is outstanding, the nib quality is great, and the clear "demonstrator" body showcases the piston fill system and whatever ink you choose. Maybe not the choice for a "serious" fountain pen on an executive desk, but that's hardly the point. These are fantastic fun pens you can collect and enjoy without going broke. Don't forget a bottle of ink!

## Frequently Bought Together

- TWSBI ECO Fountain Pen Clear EF Nib
- Platinum Carbon Ink Bottle 60ml - Black
- Noodler's Black Waterproof Fountain Pen Ink - Bulletproof,3 ounce

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**Shop now:** [https://www.desertcart.pt/products/27484672-eco-fountain-pen-clear-ef-nib](https://www.desertcart.pt/products/27484672-eco-fountain-pen-clear-ef-nib)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-06-06*