The Castell 127106 lead refills TK 9071 are specially designed for mechanical pencils and offer a lead thickness of 3.15 mm with a hardness grade of 6B. These leads are ideal for various applications, including drawing, writing, and sketching. They are characterized by their deep black color, which stands out beautifully on paper and light-sensitive materials. With a total of 10 leads in a practical plastic container, they are an excellent choice for artists and writers who value quality and consistency. The TK 9071 leads provide a constant hardness and are available in a variety of hardness grades, making them versatile for different uses. Using these leads allows for precise and expressive lines, suitable for both technical drawings and creative work.

• High-quality leads for precise drawing and writing
• Deep black lead for clear and high-contrast results
• Light-sensitive, ideal for various drawing surfaces
• Convenient packaging in a plastic container for easy storage.