Koh-I-Noor Graphite Leads 3.8-90 4820 HB provide a reliable, medium-hard graphite core that balances smooth shading with precise line work.
With a substantial 3.8 mm diameter, these leads are ideal for technical drawing, drafting, and artistic sketching, offering excellent durability and reduced breakage during use.
The HB hardness grade delivers medium darkness, perfect for clear, consistent marks that are easily erasable, supporting iterative design and detailed work.
Compatible with various clutch pencils and mechanical holders, these leads ensure professional performance for architects, engineers, and artists who demand both precision and versatility in their tools.