{"product_id":"twsbi-diamond-580alr-piston-filler-fountain-pen-navy-blue","title":"TWSBI Diamond 580ALR Piston Filler Fountain Pen - Navy Blue","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEdition:\u003c\/strong\u003e Navy Blue — Matte anodized aluminum finish offering a deep, professional, and timeless aesthetic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrip Section:\u003c\/strong\u003e \u003cstrong\u003e\"ALR\" Ribbed Aluminum\u003c\/strong\u003e — Textured matte grip for superior control and comfort\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilling Mechanism:\u003c\/strong\u003e Piston Filler — Internal piston draws ink directly into the barrel (approx. 1.9ml capacity)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNib:\u003c\/strong\u003e Stainless Steel — Precision Jowo nib (Silver finish) for smooth writing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody:\u003c\/strong\u003e Diamond Faceted — Crystal clear resin barrel catches the light and shows off the ink\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e Fully Serviceable — Includes wrench and silicone grease for home disassembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 142 mm capped, 27g weight — \u003cmeta charset=\"utf-8\"\u003e\n\u003cspan\u003ePerfectly balanced design featuring lightweight machined aluminum internals\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Taiwan — Precision engineered for durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout the TWSBI Diamond 580ALR Piston Filler Fountain Pen - Navy Blue\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTWSBI Diamond 580ALR Piston Filler Fountain Pen - Navy Blue\u003c\/strong\u003e takes the classic Diamond 580 design and upgrades it with premium materials for the serious writer. While retaining the famous diamond-faceted barrel, this \"ALR\" version replaces standard plastic components with durable \u003cstrong\u003emachined aluminum\u003c\/strong\u003e finished in a rich, dark navy.\u003c\/p\u003e\n\u003cp\u003eThe standout feature of this model is the \u003cstrong\u003eribbed aluminum grip section\u003c\/strong\u003e. Unlike smooth plastic pens that can become slippery during long writing sessions, the matte textured finish provides a secure, tactile hold for superior control. The deep Navy Blue aluminum piston mechanism and cap band give the pen a highly cohesive, understated elegance that looks just as good in a boardroom as it does on a sketching desk.\u003c\/p\u003e\n\u003cp\u003eIdeally suited for bottled ink enthusiasts, it features a high-capacity \u003cstrong\u003episton filling mechanism\u003c\/strong\u003e that holds approximately \u003cstrong\u003e1.9ml of ink\u003c\/strong\u003e—nearly 3x the capacity of a standard converter. The clear body lets you see your ink level at a glance, turning the liquid inside into a visual part of the pen's design.\u003c\/p\u003e\n\u003cp\u003eTrue to TWSBI’s philosophy, the pen arrives in a presentation box with a wrench and silicone grease, giving you the freedom to disassemble and maintain your tool for years of reliable use.\u003c\/p\u003e","brand":"TWSBI","offers":[{"title":"Extra Fine EF","offer_id":48759488020697,"sku":"M7448020","price":72.0,"currency_code":"USD","in_stock":true},{"title":"Fine F","offer_id":48759488053465,"sku":"M7448030","price":72.0,"currency_code":"USD","in_stock":true},{"title":"Medium M","offer_id":48759488086233,"sku":"M7448040","price":72.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/1173\/3209\/files\/TWSBI_Diamond_580ALR_Piston_Filler_Fountain_Pen_-_Navy_Blue.png?v=1779952935","url":"https:\/\/penandtool.com\/products\/twsbi-diamond-580alr-piston-filler-fountain-pen-navy-blue","provider":"Pen \u0026 Tool","version":"1.0","type":"link"}