Uncategorized · fountain pen
TWSBI ECO Fountain Pen - Cosmo Onyx Trim
TWSBI · sold by Yoseka Stationery · $59.00 · out of 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: Cosmic Blue 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: November 28, 2025 View all TWSBI products About TWSBI: TWSBI 三文堂 (San Wen Tong) is one of…
| Option | Price | Stock | |
|---|---|---|---|
| Extra Fine | $59.00 | out of stock | |
| Fine | $59.00 | out of stock | |
| Medium | $59.00 | out of stock | |
| Broad | $59.00 | out of stock | |
| 1.1 Stub | $59.00 | out of stock |
Prices and stock from yosekastationery.com’s public catalog, last checked 2026-11-01 18:36 UTC; the store’s checkout shows the final price. Agents: JSON at https://api.kaupia.com/v1/product?id=kp:30f7a33c-5b46-4a1d-8b02-e3b5234bbc4b; buy with POST /v1/checkout or MCP create_checkout.