{"product_id":"uni-mitsubishi-hi-uni-8h-pencil-box-12-technical-drawing","title":"Uni Mitsubishi Hi-Uni 8H Pencil – Box of 12 | Extreme Hard Graphite for Scientific Illustration \u0026 Ultra-Precision Drafting","description":"\u003ch2\u003eUni Mitsubishi Hi-Uni 8H Pencil – Box of 12\u003c\/h2\u003e\n\u003cp\u003eBeyond precision — into the realm of the imperceptible. The Uni Hi-Uni 8H sits at the extreme hard end of the graphite scale, producing a mark so fine and so faint it exists at the very threshold of visibility. Reserved for the most demanding professional applications — scientific illustration, micrographic drafting, instrument-grade technical drawing, and ghost underdrawing for fine art — the 8H is not a pencil for everyday use. It is a specialist tool for specialists. Made in Japan by Mitsubishi Pencil Co., it delivers the Hi-Uni’s legendary quality at a grade where no compromise is possible.\u003c\/p\u003e\n\n\u003ch3\u003e✦ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e8H Extreme Hard Grade – At the Threshold of Visibility:\u003c\/strong\u003e One of the hardest graphite grades commercially available, the 8H produces an extraordinarily fine, near-invisible mark — used exclusively for the most demanding precision applications in science, engineering, and fine art underdrawing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEngineered Smoothness at Extreme Hardness:\u003c\/strong\u003e Hi-Uni’s proprietary graphite formula minimizes the harsh, abrasive feel inherent to extreme hard grades — delivering a controlled, consistent stroke that other brands at this hardness simply cannot match\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnrivalled Point Retention:\u003c\/strong\u003e The extreme-hard graphite wears at a near-imperceptible rate, maintaining a needle-fine tip through the longest precision work sessions without resharpening\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBreak-Resistant Lead:\u003c\/strong\u003e Advanced core-bonding technology keeps the hard graphite core firmly anchored in the cedar casing — critical at extreme hard grades where tip snapping under firm pressure is a common failure point in lesser pencils\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Japanese Cedar Casing:\u003c\/strong\u003e Sharpens to an ultra-fine point cleanly and consistently; fine-grain cedar ensures a smooth, splinter-free sharpening experience every time\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBox of 12:\u003c\/strong\u003e Presented in the iconic Hi-Uni gold-foil box — a complete professional set for the scientific illustration studio, engineering drafting room, or specialist fine art practice\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e✦ Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Uni Mitsubishi (Japan)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Hi-Uni\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade:\u003c\/strong\u003e 8H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 12 pencils per box\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBest For:\u003c\/strong\u003e Scientific illustration, micrographic drafting, instrument-grade technical drawing, ghost underdrawing for fine art, cartographic micro-linework\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Japan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e✦ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 8H and 6H in the Hi-Uni range?\u003c\/strong\u003e\u003cbr\u003e\nA: Both are extreme hard grades, but 8H is significantly harder and lighter than 6H. The 8H deposits a mark so faint it is barely perceptible under normal lighting — approaching the absolute limit of graphite visibility on paper. It is used only in the most demanding professional contexts where even a 6H line would be considered too dark or too visible.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Who actually uses an 8H pencil?\u003c\/strong\u003e\u003cbr\u003e\nA: The 8H is a specialist tool used by scientific illustrators working on botanical or anatomical diagrams, cartographers producing micro-scale linework, engineers and architects laying in the finest possible construction grids, and fine artists who require ghost underdrawing that is completely invisible in the finished work. It is not a general-purpose sketching pencil.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does the 8H damage or score paper?\u003c\/strong\u003e\u003cbr\u003e\nA: At extreme hard grades, there is a real risk of scoring or embossing paper if heavy pressure is applied. The Hi-Uni 8H is smoother than competitors at this grade, but a very light, consistent touch is essential. Always use smooth, heavyweight paper — Bristol board, hot-press watercolor paper, or drafting film — for best results and to protect the paper surface.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can 8H lines be erased completely?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes — the 8H deposits so little graphite that it erases almost completely with a quality vinyl eraser, leaving virtually no visible residue. This makes it the ideal grade for underdrawing in watercolor, gouache, and ink illustration where a completely clean, graphite-free surface is required after the structural lines have been used.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How does the Hi-Uni 8H compare to other brands at this grade?\u003c\/strong\u003e\u003cbr\u003e\nA: Very few pencil manufacturers produce an 8H grade at all — and fewer still maintain the quality control required for consistent performance at this extreme hardness. The Hi-Uni 8H is widely regarded as the benchmark for extreme hard-grade pencils, with superior graphite consistency, smoother stroke, and better break resistance than any comparable product.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How many pencils come in the box?\u003c\/strong\u003e\u003cbr\u003e\nA: Each box contains 12 Hi-Uni 8H pencils in Mitsubishi’s signature gold-foil presentation box.\u003c\/p\u003e","brand":"Uni Mitsubishi","offers":[{"title":"Default Title","offer_id":46594535620642,"sku":"HI-UNI-12-8H","price":26.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0902\/3045\/6354\/files\/HI-UNI-PENCIL-12-PACK-8H.jpg?v=1787821780","url":"https:\/\/www.xypen.com\/products\/uni-mitsubishi-hi-uni-8h-pencil-box-12-technical-drawing","provider":"XYPen","version":"1.0","type":"link"}