Product Overview: A high-quality set of fine leads designed for smooth and break-resistant writing. The consistent HB grade ensures sharp, clean lines for technical drawing and writing. Key Features: ‣ Strong and break-resistant core ‣ Smooth and dark writing performance ‣ Ideal for mechanical pencils and drafting Specifications: ‣ Material: Polymer Graphite ‣ Quantity: 12 Pcs