{"product_id":"majohn-p138-piston-flex-fountain-pen","title":"MAJOHN P138 Piston Flex Fountain Pen","description":"\u003ch2\u003eMAJOHN P138 Differential Piston Flex Fountain Pen Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMAJOHN P138\u003c\/strong\u003e is a masterfully engineered writing instrument designed for calligraphy artists, cursive script practitioners, and fountain pen connoisseurs. Combining an intricately engraved metal barrel with a smooth differential brass piston filling mechanism and an expressive flexible nib, the P138 delivers dynamic line variation and generous ink flow. Whether crafting elegant Copperplate or Spencerian script or enjoying expressive everyday writing, the MAJOHN P138 provides an effortless, luxurious writing journey.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResponsive Flexible Nib:\u003c\/strong\u003e Specially tuned flex nib yields delicate hairlines under light touch and expands to broad swells under gentle pressure, ideal for English roundhand, calligraphy, and expressive sketching.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDifferential Brass Piston Filling System:\u003c\/strong\u003e Built-in precision-machined mechanical piston draws bottled ink directly into the large-capacity reservoir without needing cartridges or converters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntricately Engraved Metal Barrel:\u003c\/strong\u003e Features an ornate classical relief pattern providing both tactile grip security and timeless vintage sophistication.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBalanced Ergonomic Profile:\u003c\/strong\u003e Engineered center of gravity ensures fatigue-free comfort during extended writing sessions and artistic projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAirtight Screw-On Cap:\u003c\/strong\u003e Precision threading and airtight internal seal prevent nib dry-out and ensure instant, reliable start-up every time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e MAJOHN (Moonman)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e P138\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePen Type:\u003c\/strong\u003e Piston-Fill Fountain Pen\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNib Type:\u003c\/strong\u003e Flexible Calligraphy Nib\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFilling Mechanism:\u003c\/strong\u003e Differential Piston Filler (Bottled ink only)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBarrel Material:\u003c\/strong\u003e Engraved Metal \u0026amp; High-Grade Resin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWriting Application:\u003c\/strong\u003e English Calligraphy, Flourishing, Daily Journaling, Executive Signing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What kind of ink does the MAJOHN P138 require?\u003c\/strong\u003e\u003cbr\u003e\nA: The MAJOHN P138 is a dedicated piston-fill fountain pen designed exclusively for use with bottled fountain pen ink. It does not accept disposable ink cartridges.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do you operate the differential piston filling mechanism?\u003c\/strong\u003e\u003cbr\u003e\nA: Twist the blind cap at the back of the pen counterclockwise to extend the piston downwards, submerge the nib completely in your fountain pen ink bottle, and smoothly turn the knob clockwise to draw ink into the barrel.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this pen suitable for beginners practicing calligraphy?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes. The responsive flex nib offers controlled feedback, making it accessible for beginners learning pressure control for English calligraphy as well as experienced calligraphers seeking rich line variation.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How can I reach customer support if I have questions about my order?\u003c\/strong\u003e\u003cbr\u003e\nA: Our team handles customer inquiries after order placement. You can contact us at ThierryCatchHobby@qq.com. Full refunds may also be requested at any time prior to order shipment confirmation.\u003c\/p\u003e","brand":"MAJOHN","offers":[{"title":"White","offer_id":68414089789474,"sku":"MAJOHN-FP-P138","price":42.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":68414089822242,"sku":"MAJOHN-FP-P139","price":42.0,"currency_code":"USD","in_stock":true},{"title":"All Black","offer_id":68414089855010,"sku":"MAJOHN-FP-P140","price":51.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0902\/3045\/6354\/files\/1791785432853--190339685.jpg?v=1791785620","url":"https:\/\/www.xypen.com\/products\/majohn-p138-piston-flex-fountain-pen","provider":"XYPen","version":"1.0","type":"link"}