Uncategorized · Nibs
TWSBI 580 Steel Nib Unit
TWSBI · sold by The Goulet Pen Company · $22.99 · in stock
This stainless steel replacement nib unit fits the TWSBI 580, 580AL, and 580ALR. It's also backwards compatible with the 530 and 540. It includes the nib, feed, housing, and clear grip section.
| Option | Price | Stock | |
|---|---|---|---|
| Extra-Fine | $22.99 | in stock | Buy at The Goulet Pen Company → |
| Fine | $22.99 | out of stock | |
| Medium | $22.99 | out of stock | |
| Broad | $22.99 | out of stock | |
| 1.1mm Stub | $22.99 | out of stock |
Prices and stock from www.gouletpens.com’s public catalog, last checked 2026-11-01 10:03 UTC; the store’s checkout shows the final price. Agents: JSON at https://api.kaupia.com/v1/product?id=kp:49e19b3a-b256-4982-b87a-d293b5729e8a; buy with POST /v1/checkout or MCP create_checkout.