# Technical pencil lead set SCHEMAT 4B — 12 pieces, soft graphite for drawing and drafting

**URL:** https://aio.lv/en/product--schemat-5902414025141--11756767
**Data updated:** 2026-03-08 15:55 (EET)
**Category:** Pencils
**Manufacturer:** SCHEMAT
**Manufacturer code:** 5902414025141
**EAN:** 5902414025141
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Set of 12 SCHEMAT technical pencil leads in 4B hardness. Designed for technical drawing, sketching and shading, these soft graphite leads provide dark lines and smooth application for drafting, architectural sketches, illustration and fine art. Compatible with standard mechanical or clutch technical pencils that accept refill leads of the appropriate diameter.

## Long description

Set of 12 SCHEMAT technical pencil leads in 4B hardness, designed for drawing, drafting and shading. These soft graphite leads produce dark, expressive lines and smooth tonal transitions suitable for architectural sketches, technical diagrams, illustration and fine art. The leads are compatible with mechanical and clutch technical pencils that accept refill leads of the appropriate diameter, providing reliable performance for repeated use in precision work.
Advantages
The 4B softness delivers rich, dark strokes while maintaining consistent fracture resistance for technical use. Smooth laydown reduces scratchiness and improves blending for shading and tonal work. Packaged as a set of 12, the leads offer a ready supply for regular draftsmen, students, or illustrators and are suitable for both quick sketches and detailed rendering.
Suitable for
Technical drawing and drafting
Architectural and engineering sketches
Illustration and concept art
Shading, tonal studies and expressive sketching
Art education and practice sessions
Key specifications
Graphite hardness: 4B (soft)
Pack quantity: 12 leads
Intended use: drawing, drafting, shading
Compatibility: refill leads for mechanical or clutch technical pencils that accept the corresponding lead diameter
Finish: smooth, dark line quality suitable for blending
How to use
Insert a lead of the correct diameter into a compatible mechanical or clutch technical pencil according to the pencil manufacturer’s instructions. Use light pressure for fine lines and increase pressure slightly for darker, bolder strokes. For shading and tonal gradients, build layers gradually and blend with a tortillon, paper stump, or soft tissue if needed. Replace broken leads by removing the damaged piece and inserting a fresh lead from the set.
Usage recommendations
Store leads in their original packaging or a protective case to avoid breakage. Match the 4B hardness to tasks requiring dark, expressive marks; for precise, faint construction lines consider using harder grades. Keep spare leads on hand to maintain workflow during extended drawing sessions.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All SCHEMAT products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized SCHEMAT service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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