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TWSBI ECO Fountain Pen - Plum Onyx Trim
TWSBI

TWSBI ECO Fountain Pen - Plum Onyx Trim

2 reviews
Regular price
$56.00
Sale price
$56.00
Regular price
Unit price
/  per 
3 Items in Stock
 
 

The ECO is the most affordable model yet from TWSBI. This pen features a piston mechanism, a clear barrel, clear cap and piston knob. The nib is smooth with a little feedback. The barrel is clear and smooth, and has lesser grip than a typical pen. Overall, it feels great held in the hand.

  • Body Color: Plum (reddish-purple)
  • Body Material: Resin
  • Cap Type: Screw-cap
  • Compatible inks & refills: Bottled inks
  • Filling Mechanism: Piston
  • Nib Material: Steel
  • Diameter: 0.5"
  • Length: 5.2"
  • Max Ink Capacity: 1.76ml
  • Release Date: October 29th, 2025

 View all TWSBI products

About TWSBI:

TWSBI 三文堂 (San Wen Tong) is one of our earliest collection even before the store. TWSBI started as an OEM manufacturer for different western brands, and around 2009, they decided to start their own brand. With 50 years of experience in pen making, they took to fountain pen forums and gather users’ feedback. It was said that Pelican M800 was the model they were inspired. Most of their pens are transparent, so it’s really fun to see the ink color and it lasts for a very long time.

The name 三文堂 (San Wen Tong) comes from the Hall of the Three Rare Treasures, created by Emperor Qianlong as a memorial to three great masterpieces of Chinese calligraphy. The initials of the name “San Wen Tong” was reversed and thus turned into "TWS". The last letters "Bi" was added with its literal meaning of "writing instruments" in Chinese. Thus combining the two segments, creating TWSBI.

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A
Alicia

Matches perfectly with Pilot Iroshizuku Yama Budo. The black nib is a first in my collection. The trim is gorgeous. Very weighty while not putting strain on your hand.

J
JES
Pleasant surprise

Im always a little reluctant getting pens in this sort of magenta-ish color way because they don't necessarily appear in person like they do on line. I've had a couple pens that turned out pink instead of anything appearing to be plum. No disappointment here -- a beautiful plum/magenta with a hint of reddish grape. I don't worry about matching inks and pens but I was wondering what might actually work with this pen -- it turns out Pilot Yama-budo is an almost perfect match. It writes smoothly and as all ECOs, it feels solid and reliable right out of the box.

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