Uni NanoDia 0.5mm 4H Pencil Lead 2-Pack

Uni NanoDia 0.5mm 4H Pencil Lead 2-Pack

The Uni NanoDia 0.5mm 4H Mechanical Pencil Lead 2-pack offers ultra-hard graphite precision for technical draftsmen, architects, and detail artists. Engineered in Japan by Mitsubishi Pencil, each lead core is infused with roughly 400 million nano-diamond particles, providing exceptional tensile strength that withstands heavy drafting pressure without snapping. The 4H hardness grade produces razor-thin, light grey guidelines that will not smudge under rulers, making it the premier choice for blueprint plotting, precision schematics, and watercolor under-sketching.

Key Features

• Nano-Diamond Infused Matrix: Advanced nanotechnology reinforces core cohesion, eliminating lead breakage on dense drafting vellum and paper.
• Extra-Hard 4H Grade: Delivers ultra-crisp, light, high-precision line work that holds a pointed edge for extended drafting sessions.
• 100% Smudge-Proof Performance: Hard graphite formula leaves zero residual powder, keeping hands, rulers, and drafting tables clean.
• Protective Slide Dispenser: Ergonomic sliding case dispenses a single 0.5mm lead smoothly while shielding remaining stock from impact.
• High-Value 80-Lead Set: Contains 2 individual dispenser tubes with 40 leads each (80 leads total) for continuous professional drafting.

Specifications

• Brand: Uni
• Series: NanoDia Low-Wear Leads
• Model Number: U05202ND-4H
• Lead Diameter: 0.5 mm
• Hardness Grade: 4H (Extra Hard / Technical)
• Quantity: 80 Leads (2 Packs of 40 Leads)
• Lead Length: 60 mm
• Country of Origin: Japan

Frequently Asked Questions

• What is 4H pencil lead typically used for? 4H is an extra-hard grade engineered for technical drafting, architectural layouts, engineering drawings, and faint initial sketch lines that need to erase cleanly.
• Will 4H lead scratch delicate drawing paper? No, despite its extreme hardness, the nano-diamond and lubricant formula ensures a smooth glide without gouging paper fibers.
• Is this refill compatible with standard 0.5mm mechanical pencils? Yes, it fits all standard 0.5mm mechanical pencils, including Uni Kuru Toga, Staedtler, Pentel, and Rotring.
• Does 4H lead smudge when erased or washed over? 4H graphite produces minimal dust and adheres tightly, making it ideal for guidelines underneath ink lines or watercolor washes.
• How many total leads are provided? The bundle includes 2 tubes containing 40 leads each, providing 80 total 0.5mm 4H leads.