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.
