{"product_id":"ohto-c-305p-0-5mm-ceramic-rollerball-refill-black","title":"OHTO C-305 0.5 mm Ceramic Rollerball Pen Refill – Black","description":"\u003cp\u003e\u003cstrong\u003eSummary\u003c\/strong\u003e The OHTO C-305P is a 0.5 mm ceramic rollerball refill with smooth-flowing black water-based ink. Its patented Non-Dry mechanism helps protect the ink supply from air, while the hard silicon carbide ceramic ball maintains smooth, consistent rotation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Story\u003c\/strong\u003e Water-based rollerball refills require an opening that allows air to enter as the ink is used. In conventional designs, that airflow can expose the ink feeder and reservoir directly to air, increasing the chance that the tip will dry when a pen is left uncapped.\u003c\/p\u003e\n\u003cp\u003eOHTO’s patented Non-Dry mechanism manages this airflow without allowing direct contact with the ink supply. At the writing point, a 0.5 mm silicon carbide ceramic ball uses its finely textured surface to hold and distribute ink, creating the fluid writing feel for which ceramic rollerballs are known.\u003c\/p\u003e\n\u003ch2 class=\"h3-like\"\u003eWhat makes this special?\u003c\/h2\u003e\n\u003cul style=\"list-style: none; padding-left: 0; margin: 0;\"\u003e\n\u003cli\u003e✓ \u003cstrong\u003ePatented Non-Dry mechanism:\u003c\/strong\u003e Limits direct air contact with the ink feeder and reservoir to help prevent the writing tip from drying out.\u003c\/li\u003e\n\u003cli\u003e✓ \u003cstrong\u003eSiC ceramic writing ball:\u003c\/strong\u003e A finely textured silicon carbide surface holds and distributes ink for smooth, continuous writing.\u003c\/li\u003e\n\u003cli\u003e✓ \u003cstrong\u003eHard and corrosion resistant:\u003c\/strong\u003e The ceramic ball resists rust, friction and deformation while maintaining smooth rotation.\u003c\/li\u003e\n\u003cli\u003e✓ \u003cstrong\u003eFine 0.5 mm point:\u003c\/strong\u003e Produces a controlled line suited to everyday writing, detailed notes and smaller handwriting.\u003c\/li\u003e\n\u003cli\u003e✓ \u003cstrong\u003eEasy compatibility check:\u003c\/strong\u003e The refill measures 4.37 inches long and 0.24 inch in diameter; compare these measurements and the cone-shaped tip with your existing refill before ordering.\u003c\/li\u003e\n\u003cli\u003e✓ \u003cstrong\u003eProtective tube packaging:\u003c\/strong\u003e The individual refill is supplied in a plastic tube to protect it during storage and transport.\u003c\/li\u003e\n\u003cli\u003e✓ \u003cstrong\u003eMade in Japan:\u003c\/strong\u003e Manufactured in Japan using OHTO’s ceramic rollerball technology.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eProduct Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e OHTO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water-based ceramic rollerball pen refill\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign\/Series:\u003c\/strong\u003e Ceramic Roller Refill C-305P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInk Color:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInk Type:\u003c\/strong\u003e Water-based rollerball ink\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBall Size:\u003c\/strong\u003e 0.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWriting Ball:\u003c\/strong\u003e Silicon carbide ceramic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip:\u003c\/strong\u003e Stainless steel, cone shaped\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnology:\u003c\/strong\u003e OHTO Non-Dry mechanism; Japanese patent no. 5371571\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Standard:\u003c\/strong\u003e ISO 14145; this standard concerns rollerball writing performance and does not define physical refill compatibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirmed Compatibility:\u003c\/strong\u003e OHTO CR01 and CR02 ceramic rollerball pens, plus pens specifically designed for OHTO C-305 or C-305P refills\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Check:\u003c\/strong\u003e Refill measures 4.37 × 0.24 inches (111 × 6.2 mm) with a cone-shaped tip; compare the complete refill profile with your original refill before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 4.37 × 0.24 inches (111 × 6.2 mm diameter)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 lb (4.9 g)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterials:\u003c\/strong\u003e Stainless steel barrel and tip; silicon carbide ceramic ball\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Individual protective plastic tube\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Japan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Product Number:\u003c\/strong\u003e C-305P-BK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN\/EAN:\u003c\/strong\u003e 4971516291212\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OHTO","offers":[{"title":"Default Title","offer_id":67663749644602,"sku":"C-305P-BK","price":6.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0705\/8741\/6890\/files\/OTHO-C-305-BK.jpg?v=1791595381","url":"https:\/\/lovenotebooks.com\/products\/ohto-c-305p-0-5mm-ceramic-rollerball-refill-black","provider":"lovenotebooks.com","version":"1.0","type":"link"}