Pilot Nexo Graphite 0.4mm HB Lead Refills 2-Pack

Pilot Nexo Graphite — High-Purity 0.4mm HB Mechanical Pencil Lead, 2-Box Set

The sweet spot between ultra-fine and standard. The Pilot Nexo Graphite in 0.4mm occupies a unique position in the lineup — finer than the ubiquitous 0.5mm for a cleaner, more precise line, yet meaningfully more robust than 0.3mm for writers who want precision without the fragility. Pilot's high-purity graphite compound makes the difference: denser, more cohesive, and engineered to flow smoothly across the page with less pressure and less breakage.

This listing includes 2 boxes × 25 leads = 50 leads total in 0.4mm HB — a generous supply for those who've discovered that 0.4mm is exactly the lead size they didn't know they needed.

Key Features

• High-Purity Graphite Formula — Pilot's Nexo compound delivers a darker, smoother line with reduced friction and hand pressure
• 0.4mm Diameter — The ideal middle ground: finer than 0.5mm for cleaner lines, more durable than 0.3mm for everyday use
• Break-Resistant Construction — High-density graphite core resists snapping under normal writing and drawing pressure
• HB Hardness — Balanced darkness and durability for writing, note-taking, and general drafting
• Clean Erasing — Erases completely without smearing or ghost marks
• 2-Box Value Set — 25 leads per box, 50 leads total — ideal for regular users and bulk buyers
• Universal Compatibility — Fits all standard 0.4mm mechanical pencils from any brand
• Made in Japan — Pilot's precision Japanese manufacturing and quality control

Specifications

• Brand: Pilot
• Product Line: Nexo Graphite
• Lead Diameter: 0.4mm
• Hardness: HB
• Leads per Box: 25
• Boxes per Set: 2 (50 leads total)
• Compatibility: All standard 0.4mm mechanical pencils
• Origin: Japan

Frequently Asked Questions

Q: Why choose 0.4mm over 0.3mm or 0.5mm?

A: The 0.4mm is a deliberate middle ground. It produces a noticeably finer line than 0.5mm — cleaner for small handwriting and detailed work — while being significantly more resistant to breakage than 0.3mm. It's the preferred size for writers who want precision without constantly worrying about snapping their lead.

Q: What mechanical pencils are compatible with 0.4mm leads?

A: These leads fit any mechanical pencil with a 0.4mm chuck. Notable compatible models include the Pilot S10 0.4mm, Pilot S20 0.4mm, and other pencils specifically designed for 0.4mm leads. Note: 0.4mm leads are not compatible with 0.3mm or 0.5mm pencils.

Q: What hardness grade is included?

A: This set includes HB grade — the standard hardness offering a balanced combination of line darkness and lead durability, suitable for most writing, note-taking, and general drafting tasks.

Q: How many leads are included in total?

A: This is a 2-box set. Each box contains 25 leads, for a total of 50 leads.

Q: Do these leads erase cleanly?

A: Yes. The high-purity graphite formula erases completely with a standard eraser, leaving no ghost marks or smearing — important for clean exam papers and professional documents.

Q: Are these suitable for use on exam answer sheets?

A: Yes. The HB grade produces a clean, dark line reliably detected by optical mark recognition (OMR) scanners used in standardized testing, making these leads a solid choice for exams.