---
product_id: 390431802
title: "ECO Fountain Pen Clear EF Nib"
brand: "twsbi"
price: "49.47 OMR"
currency: OMR
in_stock: true
url: https://www.desertcart.com.om/products/390431802-eco-fountain-pen-clear-ef-nib
store_origin: OM
region: Oman
---

# Clear demonstrator body for ink visibility Inner cap seal prevents drying out Piston filler for smooth ink flow ECO Fountain Pen Clear EF Nib

**Brand:** twsbi
**Price:** 49.47 OMR
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write your story with clarity and confidence.

## Quick Answers

- **What is this?** ECO Fountain Pen Clear EF Nib by twsbi
- **How much does it cost?** 49.47 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/390431802-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 ensures airtight seal, so your pen is always ready to write.
- • **Precision Writing:** Available in EF, F, M, B, and Stub 1.1 nibs to match your unique style.
- • **Versatile & Stylish:** Sleek clear body with a screw-off cap that posts securely for on-the-go pros.
- • **Effortless Ink Refills:** Piston filling system lets you reload ink in seconds—no cartridges needed.
- • **Ink Level Transparency:** Clear demonstrator design keeps you in the know with every drop of ink.

## 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 airtight inner cap seal and multiple nib size options, it caters to both beginners and seasoned professionals seeking precision and style in everyday writing.

## Description

ECO Fountain Pen Clear EF Nib

## 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 |
|---------------|-------|
| Manufacturer | TWSBI |
| Brand | TWSBI |
| Model number | TW100011 |
| Package Dimensions | 21.8 x 16.6 x 2.8 cm; 20 g |
| Color | Clear |
| Closure | Screw Off Cap |
| Grip Type | plastic |
| Pencil Lead Degree (Hardness) | F |
| Material Type | Alloy Steel |
| Number of Items | 1 |
| Size | 1 count (Pack of 1) |
| Point Type | Extra Fine |
| Line Size | Extra Fine, Fine, Medium, Broad |
| Ink Color | clear |
| Manufacturer Part Number | TW100011 |
| Item Weight | 20 g |

## Product Details

- **Brand:** TWSBI
- **Writing instrument form:** Fountain Pen
- **Colour:** Clear
- **Ink colour:** clear
- **Age range (description):** Adult

## Images

![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.om/products/390431802-eco-fountain-pen-clear-ef-nib](https://www.desertcart.com.om/products/390431802-eco-fountain-pen-clear-ef-nib)

---

*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-25*