Opus 88 Fountain Pen Nib Units / No. 10 (JoWo No. 5)
Opus 88 · sold by The Gentleman Stationer · $21.60 · in stock
Fountain pen nib unit featuring Opus 88 branding, compatible with Opus 88 Koloro series fountain pens. Each nib unit threads into the section of your Opus 88 fountain pen, and includes a replacement o-ring for use with Opus 88's Japanese-style eyedropper filling system. Made in Germany
| Option | Price | Stock | |
|---|---|---|---|
| Extra Fine | $21.60 | in stock | Buy at The Gentleman Stationer → |
| Extra Fine Flex | $21.60 | out of stock | |
| Fine | $21.60 | out of stock | |
| Fine Flex | $21.60 | out of stock | |
| Medium | $21.60 | out of stock | |
| Broad | $21.60 | in stock | Buy at The Gentleman Stationer → |
| 1.4mm Stub | $21.60 | 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:4ee0800a-8e27-4cb8-a9d9-58f4d81191aa; buy with POST /v1/checkout or MCP create_checkout.