Name: Pentel Ain Stein Mechanical Pencil Lead Refills
Brand: Pentel
SKU: C273-HB
Price: 3.0 USD
Availability: InStock

Pentel Ain Stein C27x Mechanical Pencil Lead Refills. Reinforced silica honeycomb graphite for maximum break resistance. The ideal durable refill for Rotring, Kaweco, and Staedtler drafting pencils.

Close-up of Pentel Ain Stein twist-lock cap design. Features color-coded accents for instant hardness identification (HB, B, 2B, 4B) and secure storage to prevent spills.

Full range of Pentel Ain Stein Mechanical Pencil Leads. Available in 0.3mm, 0.5mm, 0.7mm, and 0.9mm sizes. Japanese JDM stationery designed for high-pressure precision drafting.

Illustration of a new extra strong formula with an internal honeycomb structure on a black background.

$3.00

Shipping calculated at checkout.

Low stock - 5 items left
Inventory on the way

Quantity

Series: Pentel Ain Stein (C27x Series) — the global benchmark for break-resistant graphite
Origin: Made in Japan — exclusive Japan Domestic Market (JDM) engineering
Technology: "Stein" Honeycomb Structure — reinforced silica frame supports the lead from within for maximum durability
Lead Sizes: 0.3mm, 0.5mm, 0.7mm, and 0.9mm — precise sizing for every drafting instrument
Hardness Range: HB, B, 2B, and 4B — color-coded tubes for instant grade identification
Quantity: 40 Leads (0.5mm / 0.7mm) | 36 Leads (0.9mm) | 15 Leads (0.3mm) per tube
Case Design: Classic "Twist-Lock" Cap — secure rotating lid prevents accidental spills in pencil cases
Features: Trifecta performance: reinforced honeycomb stability, precise "crisp" feedback, and high-adhesion smear resistance
Use: High-pressure writing, rapid note-taking, and heavy-handed drafting
Audience: Professionals who prefer tactile control and structural rigidity over softness

About the Pentel Ain Stein Mechanical Pencil Lead

For over 15 years, the Pentel Ain Stein (C27x series) has been the undisputed king of durability. Unlike standard leads that can snap under pressure, Stein leads feature a unique internal "Silica Honeycomb" structure. This reinforced ceramic frame supports the graphite core from the inside out, making it one of the strongest leads ever manufactured.

This is the choice for writers who demand precision. Known for its distinct "crisp" writing feel, Ain Stein offers more tactile feedback than softer leads, giving you superior control for detailed technical drawings and mathematical equations.

The Classic Professional Design:

Color-Coded Identification: The iconic tube design features distinct color accents (Blue for HB, Red for B, Orange for 2B, Yellow for 4B), allowing you to grab the right grade instantly from your pencil case.
Secure Twist-Cap: The traditional cap rotates to lock, ensuring your leads never spill during transit—a favorite feature for students and field engineers.
Smudge-Resistant Chemistry: Designed to adhere firmly to paper fibers, Ain Stein keeps your hands clean and your notes legible.

While engineered by Pentel, these leads are designed to maximize the performance of any professional mechanical pencil. Whether you are using a Kaweco, Staedtler, Rotring, Uni, Zebra, or Tombow, loading them with Ain Stein ensures you experience the durability that made Pentel famous. It is not just a refill; it is the industry standard.

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

Standard Tracking (Registered Airmail)

Rest of the World: USD8.99 Flat Rate | FREE over USD99 (or equivalent)
United States: USD14.99 Flat Rate | FREE over USD150
Fully tracked to your doorstep via your national post or trusted local courier.

Expedited Priority (FedEx/DHL)

Rest of the World: USD29.99
United States: USD39.99
The fastest global route. Arrives in 3–5 business days via premium couriers.

Our Logistics Commitment
All orders are handled at our precision fulfillment centers in Hong Kong or Taiwan. For our US community, we absorb a significant portion of import tariffs to ensure your rates remain fair and transparent.

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

[View Full Shipping Policy]

[{"id":47689094103257,"title":"0.3 mm \/ HB","option1":"0.3 mm","option2":"HB","option3":null,"sku":"C273-HB","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.3 mm \/ HB","public_title":"0.3 mm \/ HB","options":["0.3 mm","HB"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094136025,"title":"0.3 mm \/ B","option1":"0.3 mm","option2":"B","option3":null,"sku":"C273-B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.3 mm \/ B","public_title":"0.3 mm \/ B","options":["0.3 mm","B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094168793,"title":"0.3 mm \/ 2B","option1":"0.3 mm","option2":"2B","option3":null,"sku":"C273-2B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.3 mm \/ 2B","public_title":"0.3 mm \/ 2B","options":["0.3 mm","2B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094201561,"title":"0.3 mm \/ 4B","option1":"0.3 mm","option2":"4B","option3":null,"sku":"C273-4B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.3 mm \/ 4B","public_title":"0.3 mm \/ 4B","options":["0.3 mm","4B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094234329,"title":"0.5 mm \/ HB","option1":"0.5 mm","option2":"HB","option3":null,"sku":"C275-HB","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.5 mm \/ HB","public_title":"0.5 mm \/ HB","options":["0.5 mm","HB"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094267097,"title":"0.5 mm \/ B","option1":"0.5 mm","option2":"B","option3":null,"sku":"C275-B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.5 mm \/ B","public_title":"0.5 mm \/ B","options":["0.5 mm","B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094299865,"title":"0.5 mm \/ 2B","option1":"0.5 mm","option2":"2B","option3":null,"sku":"C275-2B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.5 mm \/ 2B","public_title":"0.5 mm \/ 2B","options":["0.5 mm","2B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094332633,"title":"0.5 mm \/ 4B","option1":"0.5 mm","option2":"4B","option3":null,"sku":"C275-4B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.5 mm \/ 4B","public_title":"0.5 mm \/ 4B","options":["0.5 mm","4B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094365401,"title":"0.7 mm \/ HB","option1":"0.7 mm","option2":"HB","option3":null,"sku":"C277-HB","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.7 mm \/ HB","public_title":"0.7 mm \/ HB","options":["0.7 mm","HB"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094398169,"title":"0.7 mm \/ B","option1":"0.7 mm","option2":"B","option3":null,"sku":"C277-B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.7 mm \/ B","public_title":"0.7 mm \/ B","options":["0.7 mm","B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094430937,"title":"0.7 mm \/ 2B","option1":"0.7 mm","option2":"2B","option3":null,"sku":"C277-2B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.7 mm \/ 2B","public_title":"0.7 mm \/ 2B","options":["0.7 mm","2B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094463705,"title":"0.7 mm \/ 4B","option1":"0.7 mm","option2":"4B","option3":null,"sku":"C277-4B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.7 mm \/ 4B","public_title":"0.7 mm \/ 4B","options":["0.7 mm","4B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094496473,"title":"0.9 mm \/ HB","option1":"0.9 mm","option2":"HB","option3":null,"sku":"C279-HB","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.9 mm \/ HB","public_title":"0.9 mm \/ HB","options":["0.9 mm","HB"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094529241,"title":"0.9 mm \/ B","option1":"0.9 mm","option2":"B","option3":null,"sku":"C279-B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.9 mm \/ B","public_title":"0.9 mm \/ B","options":["0.9 mm","B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094562009,"title":"0.9 mm \/ 2B","option1":"0.9 mm","option2":"2B","option3":null,"sku":"C279-2B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.9 mm \/ 2B","public_title":"0.9 mm \/ 2B","options":["0.9 mm","2B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":47689094594777,"title":"0.9 mm \/ 4B","option1":"0.9 mm","option2":"4B","option3":null,"sku":"C279-4B","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Pentel Ain Stein Mechanical Pencil Lead Refills - 0.9 mm \/ 4B","public_title":"0.9 mm \/ 4B","options":["0.9 mm","4B"],"price":300,"weight":0,"compare_at_price":null,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[]}]

Pentel Ain Stein Mechanical Pencil Lead Refills

About the Pentel Ain Stein Mechanical Pencil Lead

Customer Reviews

You may also like

Recently viewed

Currency

Pentel Ain Stein Mechanical Pencil Lead Refills

About the Pentel Ain Stein Mechanical Pencil Lead

Customer Reviews