Uni NanoDia 0.5mm F Pencil Lead 3-Pack

Uni NanoDia 0.5mm F Pencil Lead 3-Pack

The Uni NanoDia 0.5mm F Mechanical Pencil Lead 3-pack provides the ideal balance between crisp firmness and effortless writing smoothness. Manufactured in Japan by Mitsubishi Pencil, each lead core is reinforced with approximately 400 million nano-diamond particles to resist snapping under writing pressure. The specialized 'F' (Fine/Firm) hardness grade holds a razor-sharp point longer than standard HB while laying down clean, dark lines without messy graphite debris or smudging. With 3 portable sliding cases providing 120 leads total, this set keeps students, accountants, and draftsmen fully supplied.

Key Features

• Nano-Diamond Reinforced Matrix: Microscopic diamond particles strengthen graphite bonds for superior break resistance.
• Firm F Hardness Grade: Positioned between H and HB for exceptional point retention, crisp lettering, and zero smearing.
• Silky Low-Friction Glide: High-purity formulation glides effortlessly across paper without catching or scratching.
• Smart Slide-Dispenser Case: Ergonomic thumb-slide dispenser releases single leads smoothly to prevent accidental spills.
• Generous 120-Lead Supply: Includes 3 individual cases containing 40 leads each, offering lasting value for daily drafting and note-taking.

Specifications

• Brand: Uni
• Series: NanoDia Low-Wear Leads
• Model Number: U05202ND-F
• Lead Diameter: 0.5 mm
• Hardness Grade: F (Fine / Firm)
• Quantity: 120 Leads (3 Packs of 40 Leads)
• Lead Length: 60 mm
• Country of Origin: Japan

Frequently Asked Questions

• What does the 'F' hardness grade mean? 'F' stands for Fine or Firm. It is slightly firmer than HB, offering superior point durability with nearly identical line darkness, making it perfect for small handwriting.
• Are these refills compatible with all 0.5mm mechanical pencils? Yes, they fit all standard 0.5mm mechanical pencils, including Uni Kuru Toga, Pilot, Pentel, and Rotring models.
• Does nano-diamond lead smudge on notebook pages? No, the high-density nano-carbon formula binds cleanly to paper fibers, significantly reducing smudging and graphite dust.
• How many total leads are included in this bundle? The bundle includes 3 separate cases of 40 leads each, for a total of 120 lead refills.
• Where are Uni NanoDia leads manufactured? They are engineered and produced in Japan to precise mechanical drafting standards.