---
product_id: 79718172
title: "ECO Transparent Blue Fountain Pen F nib"
brand: "twsbi"
price: "₨1417"
currency: SCR
in_stock: true
reviews_count: 13
category: "Twsbi"
url: https://www.desertcart.sc/products/79718172-eco-transparent-blue-fountain-pen-f-nib
store_origin: SC
region: Seychelles
---

# Multiple Nib Sizes (EF, F, M, B, Stub 1.1) Transparent Blue Barrel Piston Filler Ink System ECO Transparent Blue Fountain Pen F nib

**Brand:** twsbi
**Price:** ₨1417
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write Boldly, Work Brilliantly — The Pen That Keeps Up With You

## Quick Answers

- **What is this?** ECO Transparent Blue Fountain Pen F nib by twsbi
- **How much does it cost?** ₨1417 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/79718172-eco-transparent-blue-fountain-pen-f-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

- • **Seal the Deal:** Inner cap technology ensures a perfect airtight seal, keeping your pen ready even after days of downtime.
- • **Everyday Elegance:** Smooth, reliable writing performance designed for the busy professional who demands both style and substance.
- • **Crystal Clear Cool:** Transparent blue demonstrator barrel lets you track ink levels in real-time—never run dry unexpectedly.
- • **Ink Tank That Won't Quit:** Massive piston filler reservoir means fewer refills and uninterrupted flow.
- • **Tailored Writing Experience:** Choose from five precision nib sizes to match your unique handwriting style and professional needs.

## Overview

The TWSBI ECO Transparent Blue Fountain Pen features a large piston filler ink reservoir housed in a sleek transparent blue barrel, allowing you to monitor ink levels effortlessly. Available in five nib sizes (EF, F, M, B, Stub 1.1), it offers a customizable writing experience for beginners and experts alike. Its airtight inner cap ensures ink freshness, making it a dependable daily writer that combines style, functionality, and durability.

## 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: Huge tank and smooth writer - Great pen. I love the large tank and it is a smooth writer. I never have any trouble getting the ink to flow even if it ends up sitting for a week or two.
Review: Daily Writer Superstar - One of the best fountain pens I have found as a daily writer. I have always carry a fountain pen as my daily pen because I have to document my activities in great detail. Of course, like most of us I run out of ink at the most inappropriate times. But now, I no longer have to stick cartridges in my truck, wife's car, my carry bag, my work desk, coat pockets, or other places around my work and home to ensure I have a ink cartridge ready when I need one. This pen holds a tremendous amount of ink with the ink level clearly shown since the barrel is clear. I ordered my ECO with a fine nib which seems to lean more towards a medium. A smooth writer on a variety of paper forms I complete each day. If you are looking for a workhorse pen you can use everyday I would recommend you give the ECO a try, I think its the best and most cost effective pen around if you write a lot during the day.

## 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
- Transparent Blue, Clear demonstrator

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07HG8862F |
| Best Sellers Rank | #75,109 in Office Products ( See Top 100 in Office Products ) #277 in Fountain Pens |
| Brand | TWSBI |
| Closure | Screw |
| Color | Blue |
| Customer Reviews | 4.7 4.7 out of 5 stars (251) |
| Date First Available | September 20, 2018 |
| Grip Type | Smooth |
| Ink Color | Not included |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.76 ounces |
| Item model number | TW100047 |
| Line Size | 0.3mm |
| Manufacturer | TWSBI |
| Manufacturer Part Number | TW100047 |
| Material Type | Metal, Plastic |
| Number of Items | 1 |
| Pencil Lead Degree (Hardness) | F |
| Point Type | Fine |
| Product Dimensions | 5.43 x 0.5 x 0.5 inches |
| Size | 1 Count (Pack of 1) |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** TWSBI
- **Color:** Blue
- **Ink Color:** Not included
- **Writing Instrument Form:** Fountain Pen

## Images

![ECO Transparent Blue Fountain Pen F nib - Image 1](https://m.media-amazon.com/images/I/51sJIx00ogL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Huge tank and smooth writer
*by J***Y on July 8, 2025*

Great pen. I love the large tank and it is a smooth writer. I never have any trouble getting the ink to flow even if it ends up sitting for a week or two.

### ⭐⭐⭐⭐⭐ Daily Writer Superstar
*by K***R on February 2, 2023*

One of the best fountain pens I have found as a daily writer. I have always carry a fountain pen as my daily pen because I have to document my activities in great detail. Of course, like most of us I run out of ink at the most inappropriate times. But now, I no longer have to stick cartridges in my truck, wife's car, my carry bag, my work desk, coat pockets, or other places around my work and home to ensure I have a ink cartridge ready when I need one. This pen holds a tremendous amount of ink with the ink level clearly shown since the barrel is clear. I ordered my ECO with a fine nib which seems to lean more towards a medium. A smooth writer on a variety of paper forms I complete each day. If you are looking for a workhorse pen you can use everyday I would recommend you give the ECO a try, I think its the best and most cost effective pen around if you write a lot during the day.

### ⭐⭐⭐⭐⭐ Amazing Pen
*by K***E on February 19, 2025*

This is an extremely solid fountain pen for the price. It is easy to load up a lot of ink and writes very smoothly. The cap stays on nicely since it is a twist on and posts on the back of the pen as well.

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**Shop now:** [https://www.desertcart.sc/products/79718172-eco-transparent-blue-fountain-pen-f-nib](https://www.desertcart.sc/products/79718172-eco-transparent-blue-fountain-pen-f-nib)

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-01-25*