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  • ROMA TR4000 4mm Green Colour Refillable Mechanical Charcoal Clutch Pencil Automatic Pencil
  • ROMA TR4000 4mm Green Colour Refillable Mechanical Charcoal Clutch Pencil Automatic Pencil
  • ROMA TR4000 4mm Green Colour Refillable Mechanical Charcoal Clutch Pencil Automatic Pencil
  • ROMA TR4000 4mm Green Colour Refillable Mechanical Charcoal Clutch Pencil Automatic Pencil
  • ROMA TR4000 4mm Green Colour Refillable Mechanical Charcoal Clutch Pencil Automatic Pencil
  • ROMA TR4000 4mm Green Colour Refillable Mechanical Charcoal Clutch Pencil Automatic Pencil
ROMA TR4000 4mm Green Colour Refillable Mechanical Charcoal Clutch Pencil Automatic Pencil
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ROMA TR4000 4mm Green Colour Refillable Mechanical Charcoal Clutch Pencil Automatic Pencil

  • 60 - 119 Pieces
    $2.65
  • 120 - 1199 Pieces
    $2.48
  • 1200 - 11999 Pieces
    $2.33
  • >= 12000 Pieces
    $2.20

Customization:

Customized logo（Min.Order: 20000 pieces）
Customized packaging（Min.Order: 20000 pieces）
Graphic customization（Min.Order: 20000 pieces）
View product details

ROMA TR4000 4mm Green Colour Refillable Mechanical Charcoal Clutch Pencil Automatic Pencil

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Precise Line Control: Equipped with a 4mm refillable lead system for consistent, smooth lines ideal for detailed drawing, sketching, and note-taking.
  • Built-in Sharpener: Integrated cap sharpener enables on-the-go touch-ups, eliminating the need for external sharpening tools.

Key features

  • 1. Durable Anodized Aluminum Construction

    • With a corrosion-resistant anodized aluminum body, ensure long-lasting durability and a sleek, modern aesthetic that resists scratches and wear. Lighter than traditional metal pencils, it balances strength and portability*.

  • 2. Convenient Built-In Cap Sharpener

    • With an integrated cap sharpener, enjoy on-the-go sharpening without needing external tools, saving time and reducing clutter compared to standard mechanical pencils*.

  • 3. Precision 4mm Lead Diameter

    • With a 4mm lead thickness, achieve bold, consistent lines ideal for detailed artwork, technical drawing, or note-taking—thicker than standard 0.5–0.7mm leads for enhanced visibility*.

  • 4. Ergonomic Hexagonal Grip Design

    • With a hexagonal body design, prevent rolling on surfaces and maintain a secure, comfortable grip during extended use, outperforming round-bodied pencils in stability*.

  • 5. Reputable Quality & Versatile Suitability

    • With ROMA’s established reputation for high-quality stationery, trust in precision engineering that meets industry standards for both professional and personal use*.

Product details

ROMA TR4000 4mm Green Colour Refillable Mechanical Charcoal Clutch Pencil Automatic Pencil

The ROMA TR4000 4mm Green Mechanical Charcoal Clutch Pencil combines precision engineering with ergonomic design. Crafted from anodized aluminum and durable plastic, this pencil offers a sleek hexagonal grip, built-in sharpener, and 4mm refillable charcoal lead for bold, consistent lines. Ideal for artists, designers, and students, it balances lightweight portability (15.3 cm) with rugged durability.

Technical specifications

FeatureSpecificationBenefit
Body MaterialAnodized Aluminum & PlasticLightweight, corrosion-resistant, non-slip hexagonal grip
Lead System4mm Refillable Charcoal ClutchConsistent line thickness, ideal for sketching and shading
Cap FeatureIntegrated SharpenerOn-demand sharpening for precision points
Length15.3 cmComfortable for extended use
DesignHexagonal Non-Roll ProfilePrevents rolling; ergonomic for prolonged grip
PackagingLooseCost-effective, eco-friendly distribution

Customization guide

Adjustable parameters include lead diameter (e.g., 2mm for fine details) and body material (e.g., stainless steel for industrial use). Customize the TR4000 to meet specialized needs like increased lead hardness or color-coded branding.

Get inspired

With its charcoal clutch mechanism and built-in sharpener, the TR4000 is perfect for sketching detailed landscapes or drafting technical diagrams. Its sleek green finish and metallic accents make it a standout tool for both professionals and students.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
DurabilityIndustrial Grade+20% Enhanced+40% Military-Grade
Weight35g32g (-8% lighter)28g (-20% lighter)
Lead Capacity1 Lead Slot2 Slots3 Slots + Auto-Feed
Sharpener QualityStandardCeramicDiamond-Coated

Supplier's note

  1. Technical Breakthroughs:

    • Built-in Sharpener: Reduces downtime by 50% compared to traditional sharpeners.
    • Hexagonal Grip: Ergonomic design improves control by 30% over cylindrical pencils.
    • Anodized Aluminum Body: 2x more corrosion-resistant than standard metal pencils.

  2. Version Selection Guide:

    • Base Model: Ideal for students and casual users prioritizing affordability.
    • Advanced Model: Targets artists needing ceramic sharpener precision and dual lead slots.
    • Pro Model: Engineers and professionals benefit from diamond-coated sharpeners and triple lead capacity.

With the Pro Model’s military-grade durability, you can withstand harsh environments (e.g., field sketching). Pair its lightweight design with the auto-feed feature to save 40% on refill time.

Frequently asked questions

  • Which mechanical pencil is best for artists needing 4mm charcoal leads?

  • How do I clean the lead mechanism of the ROMA TR4000?

  • Metal vs plastic bodies: Which is better for a durable mechanical pencil?

  • Does the ROMA TR4000 offer customization options like engraving?

  • Is the ROMA TR4000 suitable for heavy daily use by designers?

  • Does the ROMA TR4000 have a built-in sharpener for convenience?

  • How does the ROMA TR4000 prevent rolling during use?

  • What makes the ROMA TR4000 ideal for precise drawing tasks?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material QualityProfessional art, frequent useIndustry Standard: Plastic (hardness: 4H)
Our Base: Metal/Plastic hybrid (6H)
Our Advanced: Full titanium (8H)		▲ Base: 50% stronger than plastic (ASTM D543)
▲▲ Advanced: Corrosion-resistant		Base: Slightly heavier than plastic-only pens
Advanced: Higher cost
Lead SystemDrawing, sketching, technical draftingIndustry Standard: 0.5–0.7mm graphite (ISO 9001)
ROMA TR4000: 4mm charcoal (ISO 9000)
Advanced: 6mm lead option		▲ Base: Thicker lead for bold lines (ideal for charcoal artists)
▲▲ Advanced: Customizable lead thickness		Not suitable for fine details
Requires specific refill compatibility
Ergonomic DesignLong writing sessionsIndustry Standard: Smooth cylindrical grip
ROMA TR4000: Hexagonal grip (0.8cm width)
Advanced: Textured rubber grip		▲ Base: 30% less roll-off risk (ISO 3801)
▲▲ Advanced: Anti-slip texture		Hexagonal shape may feel unusual initially
Built-in SharpenerOn-the-go use, fieldworkIndustry Standard: No sharpener
ROMA TR4000: Integrated sharpener (50+ cycles)
Advanced: Self-cleaning sharpener (100+ cycles)		▲ Base: Immediate sharpening convenience
▲▲ Advanced: Reduced lead breakage		Base sharpener wears out faster than manual sharpeners
PackagingGift-giving, professional presentationIndustry Standard: Plastic case with foam inserts
ROMA TR4000: Loose (minimalist)
Advanced: Premium velvet case		▲ Base: Lightweight, eco-friendly (no excess packaging)
▲▲ Advanced: Luxury appeal		Base lacks protective case (risk of scratches)
DurabilityHeavy daily useIndustry Standard: 5,000 clicks (ASTM D543)
ROMA TR4000: 10,000+ clicks
Advanced: 15,000+ clicks		▲ Base: Twice as durable as standard pens
▲▲ Advanced: Military-grade stress resistance		Advanced version requires periodic lubrication

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