---
product_id: 27484672
title: "TWSBI ECO Fountain Pen Clear EF Nib"
brand: "twsbi"
price: "B/.128"
currency: PAB
in_stock: true
category: "Twsbi"
url: https://www.desertcart.com.pa/products/27484672-twsbi-eco-fountain-pen-clear-ef-nib
store_origin: PA
region: Panama
---

# Clear demonstrator body for ink visibility Inner cap seal ensures no dry-out Piston filler for smooth ink flow TWSBI ECO Fountain Pen Clear EF Nib

**Brand:** twsbi
**Price:** B/.128
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write your story with clarity and confidence.

## Quick Answers

- **What is this?** TWSBI ECO Fountain Pen Clear EF Nib by twsbi
- **How much does it cost?** B/.128 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/27484672-twsbi-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

- • **Secure Storage:** Inner cap seal locks in moisture, keeping your pen ready for action.
- • **Precision Writing:** Extra Fine nib option delivers crisp, professional lines every time.
- • **Universal Comfort:** Ambidextrous design and cap posting for balanced, ergonomic use.
- • **Ink Flow Transparency:** Clear body reveals your ink level—never run dry unexpectedly.
- • **Effortless Ink Refills:** Piston filling system lets you dive into creativity without hassle.

## Overview

The TWSBI ECO Fountain Pen Clear EF Nib combines a piston filling mechanism with a transparent demonstrator body, allowing users to monitor ink levels effortlessly. Featuring an inner cap seal to prevent drying, it offers multiple nib sizes including Extra Fine for precise writing. Designed for both beginners and experts, this eco-friendly pen balances functionality with sleek, modern aesthetics.

## 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.

## 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 |
| Best Sellers Rank | #71,986 in Office Products ( See Top 100 in Office Products ) #265 in Fountain Pens |
| Body Shape | Round |
| Brand Name | TWSBI |
| Closure Type | Screw |
| Color | Clear |
| Customer Reviews | 4.7 4.7 out of 5 stars (509) |
| 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 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

![TWSBI ECO Fountain Pen Clear EF Nib - Image 1](https://m.media-amazon.com/images/I/419GkpVx-+L.jpg)

## 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.com.pa/products/27484672-twsbi-eco-fountain-pen-clear-ef-nib](https://www.desertcart.com.pa/products/27484672-twsbi-eco-fountain-pen-clear-ef-nib)

---

*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-07-07*