TWSBI Diamond 580 Fountain Pen Nib Unit
TWSBI · sold by The Gentleman Stationer · $22.99 · in stock
Interchangeable nib unit for the TWSBI Diamond 580 and Diamond 580 ALR fountain pens. Available in stainless steel finish only. Nib units sold individually.
| Option | Price | Stock | |
|---|---|---|---|
| Extra Fine | $22.99 | out of stock | |
| Fine | $22.99 | in stock | Buy at The Gentleman Stationer → |
| Medium | $22.99 | out of stock | |
| Broad | $22.99 | in stock | Buy at The Gentleman Stationer → |
| 1.1mm Stub | $22.99 | in stock | Buy at The Gentleman Stationer → |
Prices and stock from shop.gentlemanstationer.com’s public catalog, last checked 2026-11-01 08:05 UTC; the store’s checkout shows the final price. Agents: JSON at https://api.kaupia.com/v1/product?id=kp:da951ef8-7bfe-453e-a8ff-5b5123b3c2a7; buy with POST /v1/checkout or MCP create_checkout.