{"product_id":"opus-88-12-pvd-black-replacement-nib","title":"Opus 88 #12 PVD Black Replacement Fountain Pen Nib — JoWo #6 Nib, Feed \u0026 Housing","description":"\u003ch3 dir=\"ltr\"\u003eA Drop-In Nib Unit, Finished in Black\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eThe Opus 88 #12 PVD Black is the same complete replacement nib assembly as our standard steel #12 — JoWo #6-size nib, feed, and screw-in housing, sold as one unit — finished with a black PVD (physical vapor deposition) coating for a stealth, monochrome look. Swapping it into a compatible Opus 88 pen takes seconds: unscrew the existing nib section, thread this one in, and you're writing with a new line width or grind, all in black.\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003eFit \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003eThis nib unit fits Opus 88 pens built around the JoWo #6 housing, including the \u003cstrong\u003eDemonstrator\u003c\/strong\u003e, \u003cstrong\u003eDemonstrator Yellow\u003c\/strong\u003e, \u003cstrong\u003eJazz\u003c\/strong\u003e (Demonstrator and Solid Color), \u003cstrong\u003eOmar\u003c\/strong\u003e (2020 and Demonstrator), \u003cstrong\u003eHeart Sutra\u003c\/strong\u003e, and \u003cstrong\u003eSonata\u003c\/strong\u003e. Because it uses the standard JoWo #6 threading, it also fits many other JoWo-compatible fountain pens beyond the Opus 88 line.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e this housing does \u003cstrong\u003enot\u003c\/strong\u003e fit the Opus 88 Bela, Flora, or Flow — those models use a different nib mount. Check your pen model before ordering.\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003eWhat's Included\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003eEach nib unit comes complete with the black PVD-coated stainless steel nib, feed, and threaded housing — precision-engineered for smooth, reliable ink flow.\u003c\/p\u003e\n\u003ch4 dir=\"ltr\"\u003eAvailable Sizes at Shosai\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003eWe carry the Opus 88 #12 PVD Black in all seven available widths:\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra Fine (EF)\u003c\/strong\u003e — a precise, controlled line for small handwriting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFine (F)\u003c\/strong\u003e — the most versatile everyday width\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium (M)\u003c\/strong\u003e — broader and wetter, good for shading inks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad (B)\u003c\/strong\u003e — a bold, generous line\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.5 mm Stub\u003c\/strong\u003e — an italic-style grind for crisp line variation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlex Extra Fine\u003c\/strong\u003e — a responsive nib that widens under pressure, fine at rest\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlex Fine\u003c\/strong\u003e — the same flexible response with a slightly broader baseline\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 dir=\"ltr\"\u003eAt Shosai\u003c\/h4\u003e\n\u003cp dir=\"ltr\"\u003eEvery nib is inspected before it leaves our Gatineau boutique. Available in-store and online, serving the Ottawa–Gatineau National Capital Region with shipping across Canada and the US. If you're unsure which width or grind is right for your pen or your handwriting, we're happy to help you choose.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cem\u003eBilingual service — English and French.\u003c\/em\u003e\u003c\/p\u003e","brand":"Opus 88","offers":[{"title":"Extra Fine (EF)","offer_id":49080338415841,"sku":"961208B","price":49.99,"currency_code":"CAD","in_stock":true},{"title":"Fine (F)","offer_id":49080338448609,"sku":"961209B","price":49.99,"currency_code":"CAD","in_stock":true},{"title":"Medium (M)","offer_id":49080338481377,"sku":"961210B","price":49.99,"currency_code":"CAD","in_stock":true},{"title":"Broad (B)","offer_id":49080338514145,"sku":"961211B","price":49.99,"currency_code":"CAD","in_stock":true},{"title":"1.5mm Stub (1.5)","offer_id":49080338546913,"sku":"961212B","price":49.99,"currency_code":"CAD","in_stock":true},{"title":"Flex Extra Fine (FL EF)","offer_id":49080338579681,"sku":"961206B FL EF","price":59.99,"currency_code":"CAD","in_stock":true},{"title":"Flex Fine (FL F)","offer_id":49080338612449,"sku":"961207B FL F","price":59.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0806\/8032\/1249\/files\/PXL_20260910_143918606.MACRO_FOCUS.jpg?v=1789053767","url":"https:\/\/shosai.ca\/products\/opus-88-12-pvd-black-replacement-nib","provider":"Shosai","version":"1.0","type":"link"}