{"product_id":"twsbi-diamond-580-clear-fountain-pen","title":"TWSBI Diamond 580 Clear Fountain Pen","description":"\u003ch2\u003eTWSBI Diamond 580 Clear Fountain Pen\u003c\/h2\u003e\n\u003cp\u003eThe original Diamond 580 demonstrator, in fully clear plastic — a great way to see exactly how TWSBI's piston mechanism works while you write, and a favourite starting point for anyone new to the brand.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFully clear plastic barrel and cap for a true demonstrator experience\u003c\/li\u003e\n\u003cli\u003eStainless steel nib, available in Extra Fine, Fine, Medium, Broad, and Stub 1.1mm\u003c\/li\u003e\n\u003cli\u003eScrew-type cap mechanism for a secure, no-drip carry\u003c\/li\u003e\n\u003cli\u003eFully detachable parts for easy cleaning and maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFilling System\u003c\/h3\u003e\n\u003cp\u003eUnscrew the blind cap, dip the nib into your bottled ink, and turn the piston knob to fill directly from the bottle. No cartridges or converters needed.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTWSBI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eDiamond 580\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilling Mechanism\u003c\/td\u003e\n\u003ctd\u003ePiston Filler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNib Material\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNib Sizes\u003c\/td\u003e\n\u003ctd\u003eExtra Fine, Fine, Medium, Broad, Stub 1.1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eClear Plastic (Demonstrator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"TWSBI","offers":[{"title":"Extra Fine","offer_id":45451683627184,"sku":"M7443110","price":9495.0,"currency_code":"INR","in_stock":false},{"title":"Broad","offer_id":45451683659952,"sku":"M7443140","price":9495.0,"currency_code":"INR","in_stock":false},{"title":"Fine","offer_id":45451683692720,"sku":"M7443120","price":9495.0,"currency_code":"INR","in_stock":false},{"title":"STUB 1.1","offer_id":45451683725488,"sku":"M7443150","price":9495.0,"currency_code":"INR","in_stock":false},{"title":"Medium","offer_id":45451683758256,"sku":"M7443130","price":9495.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/0139\/5888\/files\/Frunt_569x569_43c3b1c1-843d-4120-8147-b483a455028c.webp?v=1783937146","url":"https:\/\/royalcollectionstore.in\/products\/twsbi-diamond-580-clear-fountain-pen","provider":"Royal Collection Store","version":"1.0","type":"link"}