{"type":"firestarter.listing","listing":{"id":"lst_1SGBqWHk","product_name":"Replacement JoWo 6 Steel nib unit - Gold Plated","category":"Nib","description":"\nJoWo #6 Replacement Nib Unit.\nGold Plated\nAvaliable in Fine, Medium, Broad, BB, and 1.1 tips.\nCustom grinds like Italic, Oblique, Architect, and Fude\nFull unit, including nib, feeder, and housing. \n\n\nProduct\nJoWo #6 Steel nib unit - Gold Plated (Feed and Housing Included)\nReplacement nibs for our fountain pens. JoWo is a German nib manufacturer, that produces nibs for use by pen manufacturers. The history of JoWo nibs dates back to 1852. The company began as the first German manufacturer of steel nibs and today is behind some of the best fountain pen brands in the world.\nCompatibility \nYou can purchase the JoWo nib unit to replace your current nib on your Galen pen. Also, number #6 nibs are compatible with other brands. Many pen makers use their nibs, including Montegrappa, Esterbrook, Conklin, TWSBI, Leonardo Officina, Gioia, Edison, Franklin Christoph, Opus 88, and Kaweco.\nSteel nib unit with feeder and threaded housing. \nSize 6, which means that the feeder is 6 millimeters in diameter. Thread housing M7.5x0.5. New nibs are plain, without the Scroll pattern.\nOrigin\nMade in Germany\nDiscover More\nUse this nib with one of our Fountain Pens With Custom Grinds or choose a different pen from our  fountain pens collection.\n\nWriting Samples\n\n\nCustom Grinds\nSpecial nib grinds by Meltem Hazarhun (@amphorastale), who ground our Kaweco pens recently.\nDentist (Soft Architect)\nReminiscent of the Architect nib, the Dentist nib stands out for its softer feel, providing a smoother writing experience with minimal feedback and reduced scratchiness. It's excellent for everyday writing tasks. Thin on the down stroke and wide on the side stroke.\nBilateral (Fude Italic)\nThis unique nib, known as a Fude Italic, is expertly shaped from a 1.1 nib. It offers versatility with its double-sided design, featuring a Fude style on one end and an Italic style on the other.\nFude Nib\nFude means 'bent' in Japanese. These are specialized nibs bent at the tip to give it a curved or rounded surface are","images":["https://cdn.shopify.com/s/files/1/0575/7177/products/image_a3daa4ff-85a3-4339-b672-60d8ca97e8b8.jpg?v=1656011918","https://cdn.shopify.com/s/files/1/0575/7177/files/Replacement-JoWo-6-Steel-nib-unit-Rose-Gold-Plated-3.jpg?v=1741729269","https://cdn.shopify.com/s/files/1/0575/7177/files/b56ddf18-559c-4b44-9341-4c589c8b0ea4_8ceba077-1b7c-4663-bc1f-43be9fd57a35.jpg?v=1728401610"],"price":19,"currency":"USD","in_stock":true,"inventory_qty":169983,"dynamic_pricing":false,"listed_at":"2026-06-18T20:46:01.548Z"},"share_url":"https://firestarter.network/l/lst_1SGBqWHk","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_1SGBqWHk' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy Replacement JoWo 6 Steel nib unit - Gold Plated' and a budget_max comfortably above $19.00 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}