{"product_id":"twsbi-diamond-580-fountain-pen-replacement-nib-set","title":"TWSBI Diamond 580 Fountain Pen Replacement Nib Set","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eStainless steel replacement nib unit for the \u003ca href=\"https:\/\/thepapermind.mom\/products\/twsbi-diamond-580-fountain-pen-clear\"\u003eTWSBI 580\u003c\/a\u003e, 580AL, and \u003ca href=\"https:\/\/thepapermind.mom\/products\/twsbi-diamond-580alr-fountain-pen-black\"\u003e580ALR\u003c\/a\u003e (will also fit 530 and 540). Includes the nib, feed, housing, and clear plastic grip section — a full unit swap rather than just a nib.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNib: Stainless Steel TWSBI branded JoWo #5\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIncludes: Nib, feed, housing, clear grip section\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\u003cspan\u003eCompatible with: \u003ca href=\"https:\/\/thepapermind.mom\/products\/twsbi-diamond-580-fountain-pen-clear\"\u003eTWSBI Diamond 580\u003c\/a\u003e, 580AL, \u003ca href=\"https:\/\/thepapermind.mom\/products\/twsbi-diamond-580alr-fountain-pen-black\"\u003e580ALR\u003c\/a\u003e (also Diamond 540 and 530)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003ePlease note: TWSBI products are not eligible for discounts.\u003c\/em\u003e\u003c\/p\u003e","brand":"TWSBI","offers":[{"title":"Extra Fine","offer_id":47860036206757,"sku":"TSB-7443560","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Fine","offer_id":47860036239525,"sku":"TSB-7443570","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Medium","offer_id":47860036272293,"sku":"TSB-7443580","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Broad","offer_id":47860029391013,"sku":"TSB-7443590","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Stub 1.1 mm","offer_id":47860036305061,"sku":"TSB-7443600","price":22.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/6046\/2501\/files\/Diamond-580-nib-set-F_e188bc9b-82ba-42df-bbe6-dc4066d5d259.webp?v=1779925458","url":"https:\/\/thepapermind.mom\/products\/twsbi-diamond-580-fountain-pen-replacement-nib-set","provider":"The Paper Mind","version":"1.0","type":"link"}