Uni Smudge-proof Mechanical Pencil Lead 0.5mm | Mitsubishi (Japan)

Clean lines, calm pages, no smears. These Uni Smudge-Proof mechanical pencil leads are designed for people who write, sketch, and annotate with intention—and don’t want their work dragged into a gray haze by hands or highlighters. The proprietary smudge-proof formulation grips the paper surface, keeping your lines crisp even under frequent handling.

Whether you love deep, velvety darkness or precise, lighter strokes, these leads deliver a smooth, controlled feel that’s especially satisfying for note-taking, studying, planning, and technical writing. Highlighter-friendly and quietly reliable, they’re the kind of everyday tool you don’t think about—because they just work.

Product Details

• Designed by uni (Japan)

• Type: Mechanical pencil leads

• Quantity or edition: 40 leads per case

• Dimensions: 0.5 mm diameter × 60 mm length

• Special features: Smudge-proof formulation; highlighter-resistant; smooth, consistent writing

• Made in Japan

Perfect for

• Studying, exams, and textbook annotations

• Bullet journaling and planner writing

• Clean note-taking with highlighters

• Technical drawing and precise sketches

• Anyone tired of smeared graphite

Dependable, thoughtful pencil leads that keep your work looking exactly how you intended.

Color may vary slightly depending on screen settings.

Lead Hardness Guide

• 4B (Very Soft): Dark, bold lines with a smooth, expressive feel. Best for rich writing, sketching, and emphasis.

• H (Firm): Balanced and clean with lighter lines. Ideal for neat notes and everyday writing with minimal smudging.

• 4H (Extra Firm): Very light, precise lines with maximum control. Great for technical work, fine details, and tidy layouts.