Pens and Pencils | Reviews and Data

Twsbi Eco Fountain Pen

Twsbi Eco Fountain Pen

The Twsbi Eco is a plastic body, steel nib fountain pen that retails for just under $30. The pen is known for its excellent build quality and writing that matches the experience of pens that cost easily twice as much while remaining very affordable. The Eco is a piston-filled pen that does not use a converter or cartridges. As a bonus, the piston mechanism is fully user-serviceable and the pen even includes the tools necessary to remove the piston from the body (for replacement or cleaning).

The Twsbi Eco uses a size 5 steel nib and appears to be of very high quality. It’s a bit undersized and gives the pen a slightly off aesthetic when uncapped, but the rest of the pen is quite handsome with nicely balanced features.

The Twsbi Eco is sold in a number of color variants, which may be considered different models, they include the:

  • Eco Black
  • Eco Clear
  • Eco Pink
  • Eco White
  • Eco Transparent Blossom
  • Eco Transparent Blue
  • Eco Transparent Green

Some of these are limited edition pens that are no longer sold. Each of the models are the same but the color of the cap and the end piece are different from the standard, entirely clear Eco.

Note, no ink is sold with the Twsbi Eco, so you’ll have to find your own. The pen only uses a piston filling mechanism so you’ll need a bottle of fountain pen ink, not a cartridge!

Twsbi Eco Review

The Eco is an excellent pen, and our favorite fountain pen between $10 and $50. In fact, it’s a better but than the next level of the Twsbi pens, like the Diamond 580.

The Eco has some minor downsides, like a round body instead of a faceted one and a smallish nib, but these aren’t generally dealbeakers.

This is a good looking, high performance pen that thrives despite its competitive price category.

Highly recommended.

Twsbi Eco Help

If your Eco needs to be maintained or fixed in some way, don’t worry: the pen is fully maintainable.

Twsbi Eco Fix

Using the included wrench and silicone grease, the pen can be fully stripped down and cleaned. It can be greased, adjusted, tightened, or parts can be replaced. This is a simply operation, but one that has to be done carefully given all the tiny plastic parts inside the pen.

The top of the Eco is a screw that moves the piston filler up and down, in this same area the include plastic wrench can be pushed in between piston knob and the body in order to unscrew the internals. It’s a simple operation.

Above are the parts of the Twsbi Eco, in case the pen needs work or part replacements. The company is generally helpful with with this, but it only makes sense to a limited degree given the low price of the pen.

Twsbi Eco Fountain Pen Information

Street Price Check Price
Manufacturer TWSBI
Pen Type Fountain Pen | Piston (built-in)
Barrel Color Clear, White, Black, Blue, Pink, Green
Barrel Material Plastic
Grip Color Clear, White, Black, Blue, Pink, Green
Grip Material Plastic
Country of Origin China
MSRP $29
Still Sold Yes
Similar To
Capped? Retractable?Capped
Length Capped / Retracted (cm)13.9
Length Posted (cm)16.1 cm
Length Uncapped (cm)13.1 cm
Weight (g)21 grams
Nib MaterialSteel
Nib ColorSilver
Nib SizesExtra Fine, Fine, Medium, Broad, 1.1 mm Stub