{"product_id":"twsbi-kai-fountain-pen","title":"TWSBI Kai Fountain Pen","description":"\u003c!--tab:Description--\u003e\n\u003cp\u003eThe \u003cstrong\u003eTWSBI Kai Fountain Pen\u003c\/strong\u003e is a limited-edition release finished in a dark blue flecked acrylic resin with rose gold trim throughout — cap, clip, rings, and nib all carry the same warm metallic accent against the deep blue body. Like every TWSBI, it's built to be taken apart, cared for, and put back together, turning routine maintenance into part of the ownership experience rather than something to avoid.\u003c\/p\u003e\n\u003cp\u003eThe Kai uses TWSBI's benchmark piston ink-filling mechanism: a twist of the end knob draws ink straight from the bottle, no cartridge or converter required. An ink window along the barrel lets you see exactly how much ink remains at a glance. The rose gold nib is sized comparably to the TWSBI 580 nib, and every part of the pen is fully detachable for cleaning or servicing. Each pen ships with a wrench and silicone grease for long-term care — not needed on day one, but there when the pen eventually calls for it. Note that while the cap can physically post onto the back of the barrel, TWSBI recommends against it, as posting risks scratching the acrylic.\u003c\/p\u003e\n\u003cp\u003eTWSBI is the in-house brand of Ta Shin Precision, a manufacturer with more than 40 years of experience producing pens — including for other brands — before launching under its own name. The name TWSBI combines \"TWS,\" the reversed initials of \"San Wen Tong\" (Hall of Three Cultures), with \"BI,\" meaning writing instrument.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eLimited-edition dark blue flecked acrylic resin body with rose gold trim — will not be produced on an ongoing basis.\u003c\/li\u003e\n  \u003cli\u003eRose gold nib, clip, and rings, sized comparably to the TWSBI 580 nib.\u003c\/li\u003e\n  \u003cli\u003eBroad nib grade for a smooth, wetter line.\u003c\/li\u003e\n  \u003cli\u003ePiston ink-filling mechanism — twist-fill directly from a bottle, no cartridge needed.\u003c\/li\u003e\n  \u003cli\u003eInk window for at-a-glance visibility of remaining ink level.\u003c\/li\u003e\n  \u003cli\u003eFully detachable design, built for disassembly, cleaning, and reassembly.\u003c\/li\u003e\n  \u003cli\u003eShips with a wrench and silicone grease for long-term maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\n\u003c!--tab:Technical Specifications--\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTWSBI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKai Fountain Pen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEdition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLimited edition, not produced on an ongoing basis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDark blue flecked acrylic resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrim\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRose gold (nib, clip, rings)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNib Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBroad\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNib Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eComparable to TWSBI 580 nib\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilling System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePiston fill\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInk Window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFully detachable, disassembly-friendly design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Accessories\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWrench, silicone grease (for long-term maintenance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!--tab:FAQs--\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cbutton class=\"faq-question\"\u003e\u003cspan\u003eHow does the piston filling system work?\u003c\/span\u003e\n\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M7 10l5 5 5-5\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cp\u003eTwist the knob at the end of the pen to draw the piston back, dip the nib into a bottle of ink, then twist the other way to draw ink up into the barrel — no cartridge or converter needed.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cbutton class=\"faq-question\"\u003e\u003cspan\u003eWhat nib grade does the Kai come in?\u003c\/span\u003e\n\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M7 10l5 5 5-5\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cp\u003eThis listing is the Broad nib grade, laying down a wider, smoother line — well suited to fast, flowing writing rather than fine detail work.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cbutton class=\"faq-question\"\u003e\u003cspan\u003eCan I post the cap on the back of the pen?\u003c\/span\u003e\n\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M7 10l5 5 5-5\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cp\u003eThe cap fits onto the back physically, but TWSBI recommends against posting it, since doing so can scratch the acrylic barrel over time.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cbutton class=\"faq-question\"\u003e\u003cspan\u003eWhat are the wrench and silicone grease for?\u003c\/span\u003e\n\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M7 10l5 5 5-5\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cp\u003eBoth are for long-term maintenance rather than immediate use — the wrench helps with disassembly, and the silicone grease keeps the piston mechanism moving smoothly over years of use.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"faq-item\"\u003e\n\u003cbutton class=\"faq-question\"\u003e\u003cspan\u003eIs the TWSBI Kai a limited edition?\u003c\/span\u003e\n\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M7 10l5 5 5-5\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/button\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cp\u003eYes. The Kai is a limited-edition release in this dark blue and rose gold colourway and will not be produced on an ongoing basis once current stock is sold.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TWSBI","offers":[{"title":"Broad","offer_id":50537209856048,"sku":"TOE-M7449890","price":22500.0,"currency_code":"INR","in_stock":true},{"title":"Medium","offer_id":50537209921584,"sku":"TOE-M7449880","price":22500.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0569\/1405\/1120\/files\/1754312797TW_KAI_BLU_RGT_FPM_M7449880_2_1024x1024_059a9398-afe1-4f3a-b9e3-675ba1f2393c.jpg?v=1790159782","url":"https:\/\/penpencilink.com\/products\/twsbi-kai-fountain-pen","provider":"penpencilink","version":"1.0","type":"link"}