This is a premium custom mechanical pencil engineered by Hanpen, South Korea’s leading high-end custom pen studio renown for its structural precision. This specific edition features a Cocoa Burl wood barrel finished with a multi-layered, ultra-high gloss thick protective coating, showcasing the natural grain structure of rare burl wood.

The Concept of the "Missing PG3"
Pentel's PG series includes the PG2 (0.2mm), PG5 (0.5mm), and PG7 (0.7mm)—but there has never been an official "PG3" model in that numeric sequence. This custom mechanical pencil is inspired by the concept of that missing numeric link. Built around the internal mechanism of the Pentel PG5, Hanpen has re-engineered it into a high-performance 0.3mm drafting instrument, blending classic engineering with the premium warmth of natural burl wood.

Engineered with a unique PMG-style cap system; when posted on the rear node, the push-button extends dynamically to allow seamless, fluid knocking.

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⚙️ Technical Features

• High-End Precision Hardware: Hanpen designs and produces its own custom internal and external metal fixtures, completely eliminating the loose tolerances and tip-wobble common in low-tier customs.
• Proprietary Cap Integration: Re-engineering the protection mechanics of the vintage Pentel PMG model, Hanpen has utilized its own advanced proprietary technology to implement the dual-cap functionality. The custom-milled aluminum top cap serves as a sleeve protector when carried and seamlessly threads onto the rear node during writing sessions without disrupting the balance.
• Natural Burl Aesthetic & Advanced Coating: The custom barrel captures the wild, unrepeatable swirl patterns unique to premium cocoa burl hardwoods. Encapsulated under a thick, premium ultra-high gloss armor coating, the wood is entirely sealed from climate, moisture, and yellowing over time.

Brand Heritage & Technical Hegemony

• The Pinnacle of Korean Custom Pens: Hanpen stands at the absolute zenith of the high-end custom writing instrument market in South Korea. It is universally recognized among serious stationery collectors for defining the gold standard of luxury customized pencils.
• Patented Technology & In-House Manufacturing: Unlike typical modding workshops that assemble premade aftermarket parts, Hanpen is one of the rare elite studios that holds a robust portfolio of proprietary mechanical patents. Nearly every core structural fixture and metal component is manufactured directly in-house.
• Unrivaled Precision & Premium Status: By enforcing strict micrometric tolerances in its component production, Hanpen completely eliminates the loose micro-wobbles found in mass-market alternatives. This relentless pursuit of mechanical perfection positions Hanpen at a premium price point, commanding immense respect and high valuation within the global collector community.

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Specifications

• Studio: Hanpen (South Korea)
• Model: CTG Custom
• Pattern/Finish: Thick Ultra-High Gloss Cocoa Burl Wood
• Core Mechanism: Modified Pentel PG5 Base (0.3mm Line Output)
• Functional Design: PMG-Style Dual Detachable Protective Cap System
• When the protective cap is posted on the rear node, an integrated mechanism automatically extends the push-button outward, allowing seamless and fluid lead advancement even with the cap securely mounted.

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