Name: Uni Smudge-Proof Mechanical Pencil Lead Refills
Brand: Uni
SKU: UL-S-0.3-25HB
Price: 3.0 USD
Availability: InStock

Collection of uni Smudge-Proof pencil lead refill cases in various sizes and hardness grades.

Close-up of open uni Smudge-Proof lead cases showing the graphite refills and sliding mechanism.

uni Smudge-Proof leads on a notebook demonstrating clean, highlighter-friendly pencil writing.

Hand dispensing uni 0.5mm B Smudge-Proof mechanical pencil lead from its minimalist slide case.

uni Smudge-Proof Mechanical Pencil Lead Refill, 0.3mm HB in white case with blue slider.

uni Smudge-Proof Mechanical Pencil Lead Refill, 0.3mm B in white case with blue slider.

uni Smudge-Proof Mechanical Pencil Lead Refill, 0.3mm 2B in white case with blue slider.

uni Smudge-Proof Mechanical Pencil Lead Refill, 0.5mm HB in white case with blue slider.

uni Smudge-Proof Mechanical Pencil Lead Refill, 0.5mm B in white case with red slider.

uni Smudge-Proof Mechanical Pencil Lead Refill, 0.5mm 2B in white case with orange slider.

uni Smudge-Proof Mechanical Pencil Lead Refill, 0.7mm 2B in white case with orange slider.

$3.00

Shipping calculated at checkout.

Smudge-Resistant Technology: Graphite that bonds closely to the paper resists rubbing, helping keep your notes and hands clean.
Highlighter-Friendly: Designed so marker lines are less likely to smear your writing or dirty the highlighter tip.
Versatile Range: Available in 0.3 mm (25 leads per case), 0.5 mm (40 leads), and 0.7 mm (40 leads) across HB, B, and 2B hardness grades.
Minimalist Case: A simple, off-white slide case featuring a smooth mechanism for quick, one-handed lead dispensing.
Origin: Made in Japan — Engineered by Uni (Mitsubishi Pencil).

Quantity

In Stock & Ready
Every tool is personally dispatched from our hubs within 48 hours (2 business days).

Gift wrap available: add "Make it a gift" in your cart for USD 12 per order. Gift-wrapped orders may take 1 extra business day to dispatch.

Standard Tracking (Registered Airmail)

United States: USD 14.99 | FREE over USD 150
[✔ Duties & Taxes: Prepaid by Us]
Rest of the World: USD 8.99 | FREE over USD 99
Fully tracked to your doorstep via national post or local courier.

Expedited Priority (FedEx/DHL)

United States: USD 39.99 (3–5 Business Days)
[⚠ ~$30 Carrier Fee: Billed to Recipient*]
Rest of the World: USD 29.99
The fastest global route via premium express couriers.

Our Logistics Commitment
Orders are handled at our precision fulfillment centers in Hong Kong or Taiwan. For our US community, we absorb import tariffs on Standard Shipping to keep rates fair.

*Note: US Expedited couriers invoice recipients directly for individual customs clearance and administrative fees (typically ~USD 30).

Rates are listed in USD; our system automatically converts these to your local currency at checkout.

[View Full Shipping Policy]

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About the Uni Smudge-Proof Pencil Lead

The Uni Smudge-Proof Lead (UL-S Series) is engineered for mechanical pencil users who want crisp, dark text and cleaner pages. Developed by Uni (Mitsubishi Pencil), this lead delivers smooth writing while reducing graphite transfer onto your hands or across the paper.

Perfect for everyday notes, technical drawings, study materials, and creative work. Its rub-resistant properties help preserve the clarity of handwritten notes, making it an excellent choice for students, professionals, and left-handed writers who rely on mechanical pencils daily.

Why Choose Uni Smudge-Proof Lead

Cleaner Writing Experience: The graphite particles cling to the paper instead of spreading when rubbed, helping keep your workspace and notebook clean during long writing sessions.
Highlighter-Friendly: Designed so highlighter lines are less likely to smear your writing or dirty the marker tip.
Quick-Dispense Case: The minimalist, off-white case features a smooth sliding mechanism, allowing quick and easy access to leads without interrupting your workflow.
Fits Standard Mechanical Pencils: Works with any mechanical pencil that takes the same lead diameter.

See Uni Smudge-Proof Lead in Action

Official demos from Mitsubishi Pencil (in Japanese). Each one shows a key feature on this page.

Rub Test

Highlighter Test

Slide Case

Specifications ⌄

Brand: Uni (Mitsubishi Pencil)
Series: UL-S Smudge-Proof Lead
Lead Sizes: 0.3 mm, 0.5 mm, 0.7 mm
Hardness Grades: HB, B, 2B
Quantity per Case: 25 leads (0.3 mm) / 40 leads (0.5 mm & 0.7 mm)
Dispenser: Off-white slide case
Origin: Japan

Uni Smudge-Proof Mechanical Pencil Lead Refills

About the Uni Smudge-Proof Pencil Lead

Why Choose Uni Smudge-Proof Lead

See Uni Smudge-Proof Lead in Action

Rub Test

Highlighter Test

Slide Case

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Uni Smudge-Proof Mechanical Pencil Lead Refills

About the Uni Smudge-Proof Pencil Lead

Why Choose Uni Smudge-Proof Lead

See Uni Smudge-Proof Lead in Action

Rub Test

Highlighter Test

Slide Case